From b9b2344d5b5973036d4e23b4b2f2bf053d5c8ff6 Mon Sep 17 00:00:00 2001
From: yueyinqiu <lujiaqi2003@126.com>
Date: Tue, 23 Jun 2020 19:53:58 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E7=94=A8kotlin=EF=BC=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 NWorldPermissions/NWorldPermissions.iml       |   2 +-
 NWorldPermissions/NWorldPermissions.ipr       | 166 ++++--------------
 NWorldPermissions/res/plugin.yml              |   2 +-
 .../worldpermissions/MarksManager.java        |  87 ---------
 .../nololiyt/worldpermissions/MarksManager.kt |  67 +++++++
 .../worldpermissions/MessagesManager.java     |  87 ---------
 .../worldpermissions/MessagesManager.kt       |  71 ++++++++
 .../worldpermissions/PlayerListener.java      | 127 --------------
 .../worldpermissions/RootCommandExecutor.java |  25 ---
 .../worldpermissions/RootCommandExecutor.kt   |  20 +++
 .../nololiyt/worldpermissions/RootPlugin.java |  38 ----
 .../nololiyt/worldpermissions/RootPlugin.kt   |  31 ++++
 .../worldpermissions/UpdateChecker.java       |  64 -------
 .../worldpermissions/UpdateChecker.kt         |  51 ++++++
 .../commands/CommandLayer.java                |  15 --
 .../worldpermissions/commands/CommandLayer.kt |  14 ++
 .../worldpermissions/commands/Executor.java   |  61 -------
 .../worldpermissions/commands/Executor.kt     |  53 ++++++
 .../worldpermissions/commands/RootRouter.java |  70 --------
 .../worldpermissions/commands/RootRouter.kt   |  49 ++++++
 .../worldpermissions/commands/Router.java     |  75 --------
 .../worldpermissions/commands/Router.kt       |  66 +++++++
 .../commands/config/AddExecutor.java          |  56 ------
 .../commands/config/AddExecutor.kt            |  46 +++++
 .../commands/config/ConfigRouter.java         |  40 -----
 .../commands/config/ConfigRouter.kt           |  33 ++++
 .../commands/config/RemoveExecutor.java       |  55 ------
 .../commands/config/RemoveExecutor.kt         |  46 +++++
 .../commands/marks/AddExecutor.java           |  89 ----------
 .../commands/marks/AddExecutor.kt             |  75 ++++++++
 .../commands/marks/MarksRouter.java           |  40 -----
 .../commands/marks/MarksRouter.kt             |  33 ++++
 .../commands/marks/RemoveExecutor.java        |  74 --------
 .../commands/marks/RemoveExecutor.kt          |  65 +++++++
 .../commands/reload/ConfigExecutor.java       |  44 -----
 .../commands/reload/ConfigExecutor.kt         |  38 ++++
 .../commands/reload/MarksExecutor.java        |  44 -----
 .../commands/reload/MarksExecutor.kt          |  38 ++++
 .../commands/reload/MessagesExecutor.java     |  44 -----
 .../commands/reload/MessagesExecutor.kt       |  38 ++++
 .../commands/reload/ReloadRouter.java         |  43 -----
 .../commands/reload/ReloadRouter.kt           |  35 ++++
 .../commands/tp/OfflineExecutor.java          | 106 -----------
 .../commands/tp/OfflineExecutor.kt            |  84 +++++++++
 .../commands/tp/OnlineExecutor.java           | 108 ------------
 .../commands/tp/OnlineExecutor.kt             |  83 +++++++++
 .../commands/tp/TpRouter.java                 |  41 -----
 .../worldpermissions/commands/tp/TpRouter.kt  |  33 ++++
 .../entities/DotDividedStringBuilder.java     |  31 ----
 .../entities/DotDividedStringBuilder.kt       |  25 +++
 .../worldpermissions/entities/StringPair.java |  54 ------
 .../worldpermissions/entities/StringPair.kt   |  30 ++++
 .../playerlisteners/LoginAndQuitListener.java |  79 ---------
 .../playerlisteners/LoginAndQuitListener.kt   |  65 +++++++
 .../playerlisteners/TeleportListener.java     |  71 --------
 .../playerlisteners/TeleportListener.kt       |  55 ++++++
 56 files changed, 1276 insertions(+), 1806 deletions(-)
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/MarksManager.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/MarksManager.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/MessagesManager.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/MessagesManager.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/PlayerListener.java
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/RootCommandExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/RootCommandExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/RootPlugin.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/RootPlugin.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/UpdateChecker.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/UpdateChecker.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/CommandLayer.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/CommandLayer.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Executor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Executor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/RootRouter.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/RootRouter.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Router.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Router.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/AddExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/AddExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/ConfigRouter.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/ConfigRouter.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/RemoveExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/RemoveExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/AddExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/AddExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/MarksRouter.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/MarksRouter.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/RemoveExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/RemoveExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ConfigExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ConfigExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MarksExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MarksExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MessagesExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MessagesExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ReloadRouter.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ReloadRouter.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OfflineExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OfflineExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OnlineExecutor.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OnlineExecutor.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/TpRouter.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/TpRouter.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/entities/DotDividedStringBuilder.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/entities/DotDividedStringBuilder.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/entities/StringPair.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/entities/StringPair.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/LoginAndQuitListener.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/LoginAndQuitListener.kt
 delete mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/TeleportListener.java
 create mode 100644 NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/TeleportListener.kt

diff --git a/NWorldPermissions/NWorldPermissions.iml b/NWorldPermissions/NWorldPermissions.iml
index 644750d..245d342 100644
--- a/NWorldPermissions/NWorldPermissions.iml
+++ b/NWorldPermissions/NWorldPermissions.iml
@@ -7,6 +7,6 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="bukkit-1.15.2-R0.1-20200606.093523-114" level="project" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
   </component>
 </module>
\ No newline at end of file
diff --git a/NWorldPermissions/NWorldPermissions.ipr b/NWorldPermissions/NWorldPermissions.ipr
index 922b8d8..7e75302 100644
--- a/NWorldPermissions/NWorldPermissions.ipr
+++ b/NWorldPermissions/NWorldPermissions.ipr
@@ -6,9 +6,9 @@
       <root id="archive" name="NWorldPermissions.jar">
         <element id="module-output" name="NWorldPermissions" />
         <element id="file-copy" path="$PROJECT_DIR$/res/config.yml" />
-        <element id="file-copy" path="$PROJECT_DIR$/res/plugin.yml" />
-        <element id="file-copy" path="$PROJECT_DIR$/res/messages.yml" />
         <element id="file-copy" path="$PROJECT_DIR$/res/marks.yml" />
+        <element id="file-copy" path="$PROJECT_DIR$/res/messages.yml" />
+        <element id="file-copy" path="$PROJECT_DIR$/res/plugin.yml" />
       </root>
     </artifact>
   </component>
@@ -18,140 +18,23 @@
     </profile>
     <version value="1.0" />
   </component>
-  <component name="Palette2">
-    <group name="Swing">
-      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.png" removable="false" auto-create-binding="false" can-attach-label="false">
-        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
-      </item>
-      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.png" removable="false" auto-create-binding="false" can-attach-label="false">
-        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
-      </item>
-      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.png" removable="false" auto-create-binding="false" can-attach-label="false">
-        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
-      </item>
-      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.png" removable="false" auto-create-binding="false" can-attach-label="true">
-        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
-      </item>
-      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
-        <initial-values>
-          <property name="text" value="Button" />
-        </initial-values>
-      </item>
-      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
-        <initial-values>
-          <property name="text" value="RadioButton" />
-        </initial-values>
-      </item>
-      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
-        <initial-values>
-          <property name="text" value="CheckBox" />
-        </initial-values>
-      </item>
-      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.png" removable="false" auto-create-binding="false" can-attach-label="false">
-        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
-        <initial-values>
-          <property name="text" value="Label" />
-        </initial-values>
-      </item>
-      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.png" removable="false" auto-create-binding="true" can-attach-label="true">
-        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
-          <preferred-size width="150" height="-1" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.png" removable="false" auto-create-binding="true" can-attach-label="true">
-        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
-          <preferred-size width="150" height="-1" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.png" removable="false" auto-create-binding="true" can-attach-label="true">
-        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
-          <preferred-size width="150" height="-1" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.png" removable="false" auto-create-binding="true" can-attach-label="true">
-        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
-          <preferred-size width="150" height="50" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.png" removable="false" auto-create-binding="true" can-attach-label="true">
-        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
-          <preferred-size width="150" height="50" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.png" removable="false" auto-create-binding="true" can-attach-label="true">
-        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
-          <preferred-size width="150" height="50" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.png" removable="false" auto-create-binding="true" can-attach-label="true">
-        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
-      </item>
-      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
-          <preferred-size width="150" height="50" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
-          <preferred-size width="150" height="50" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
-          <preferred-size width="150" height="50" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
-          <preferred-size width="200" height="200" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.png" removable="false" auto-create-binding="false" can-attach-label="false">
-        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
-          <preferred-size width="200" height="200" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.png" removable="false" auto-create-binding="true" can-attach-label="true">
-        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
-      </item>
-      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
-      </item>
-      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.png" removable="false" auto-create-binding="false" can-attach-label="false">
-        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
-      </item>
-      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
-      </item>
-      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.png" removable="false" auto-create-binding="false" can-attach-label="false">
-        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
-          <preferred-size width="-1" height="20" />
-        </default-constraints>
-      </item>
-      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.png" removable="false" auto-create-binding="false" can-attach-label="false">
-        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
-      </item>
-      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.png" removable="false" auto-create-binding="true" can-attach-label="false">
-        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
-      </item>
-    </group>
+  <component name="Kotlin2JvmCompilerArguments">
+    <option name="jvmTarget" value="1.8" />
   </component>
-  <component name="ProjectCodeStyleConfiguration">
-    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
+  <component name="KotlinCommonCompilerArguments">
+    <option name="apiVersion" value="1.3" />
+    <option name="languageVersion" value="1.3" />
   </component>
-  <component name="ProjectDictionaryState">
-    <dictionary name="user">
-      <words>
-        <w>teleport</w>
-        <w>teleportation</w>
-        <w>teleported</w>
-        <w>teleporting</w>
-        <w>unteleported</w>
-      </words>
-    </dictionary>
+  <component name="ProjectCodeStyleConfiguration">
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+    <code_scheme name="Project" version="173">
+      <JetCodeStyleSettings>
+        <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+      </JetCodeStyleSettings>
+      <codeStyleSettings language="kotlin">
+        <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+      </codeStyleSettings>
+    </code_scheme>
   </component>
   <component name="ProjectModuleManager">
     <modules>
@@ -165,13 +48,24 @@
     <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
   </component>
   <component name="libraryTable">
-    <library name="bukkit-1.15.2-R0.1-20200606.093523-114">
+    <library name="KotlinJavaRuntime">
       <CLASSES>
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib.jar!/" />
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-reflect.jar!/" />
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-test.jar!/" />
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib-jdk7.jar!/" />
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib-jdk8.jar!/" />
         <root url="jar://$PROJECT_DIR$/libs/bukkit-1.15.2-R0.1-20200606.093523-114.jar!/" />
         <root url="jar://$PROJECT_DIR$/libs/json-20200518.jar!/" />
       </CLASSES>
       <JAVADOC />
-      <SOURCES />
+      <SOURCES>
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib-sources.jar!/" />
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-reflect-sources.jar!/" />
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-test-sources.jar!/" />
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib-jdk7-sources.jar!/" />
+        <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib-jdk8-sources.jar!/" />
+      </SOURCES>
     </library>
   </component>
 </project>
\ No newline at end of file
diff --git a/NWorldPermissions/res/plugin.yml b/NWorldPermissions/res/plugin.yml
index 189e19e..4c5d351 100644
--- a/NWorldPermissions/res/plugin.yml
+++ b/NWorldPermissions/res/plugin.yml
@@ -1,6 +1,6 @@
 name: NWorldPermissions
 main: top.nololiyt.worldpermissions.RootPlugin
-version: 4.0.4
+version: 4.0.4_Pre1
 author: yueyinqiu5990
 description: A strange power stopping players being teleported to a world.
 website: https://github.com/yueyinqiu/NWorldPermissions/wiki
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/MarksManager.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/MarksManager.java
deleted file mode 100644
index 85f40eb..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/MarksManager.java
+++ /dev/null
@@ -1,87 +0,0 @@
-package top.nololiyt.worldpermissions;
-
-import org.bukkit.Location;
-import org.bukkit.configuration.file.YamlConfiguration;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-
-import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.List;
-
-public class MarksManager
-{
-    private RootPlugin rootPlugin;
-    
-    private YamlConfiguration configuration;
-    
-    MarksManager(RootPlugin rootPlugin)
-    {
-        this.rootPlugin = rootPlugin;
-        File file = getMarksFile();
-        if (!file.exists())
-        {
-            saveDefaultFile(file);
-        }
-        reloadConfiguration();
-    }
-    
-    private File getMarksFile()
-    {
-        return new File(
-                rootPlugin.getDataFolder().getAbsolutePath(), "marks.yml");
-    }
-    
-    private void saveDefaultFile(File file)
-    {
-        InputStream res = rootPlugin.getResource("marks.yml");
-        try
-        {
-            file.getParentFile().mkdirs();
-            file.delete();
-            file.createNewFile();
-            FileOutputStream fileOutputStream = new FileOutputStream(file);
-    
-            byte[] buffer = new byte[4096];
-            for (; ; )
-            {
-                int count = res.read(buffer, 0, buffer.length);
-                fileOutputStream.write(buffer, 0, count);
-                if (count < buffer.length)
-                {
-                    break;
-                }
-            }
-    
-            fileOutputStream.close();
-        }
-        catch (IOException e)
-        {
-            e.printStackTrace();
-        }
-    }
-    
-    public void reloadConfiguration()
-    {
-        configuration = YamlConfiguration.loadConfiguration(
-                getMarksFile());
-    }
-    
-    public void setMark(String name, Location mark) throws IOException
-    {
-        configuration.set(name, mark);
-        configuration.save(getMarksFile());
-    }
-    
-    public Location getMark(String name)
-    {
-        Object oLocation = configuration.get(name);
-        if (oLocation == null)
-        {
-            return null;
-        }
-        return (Location) oLocation;
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/MarksManager.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/MarksManager.kt
new file mode 100644
index 0000000..295af60
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/MarksManager.kt
@@ -0,0 +1,67 @@
+package top.nololiyt.worldpermissions
+
+import org.bukkit.Location
+import org.bukkit.configuration.file.YamlConfiguration
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+
+import java.io.File
+import java.io.FileOutputStream
+import java.io.IOException
+import java.io.InputStream
+
+class MarksManager internal constructor(private val rootPlugin: RootPlugin) {
+
+    private var configuration: YamlConfiguration? = null
+
+    private val marksFile: File
+        get() = File(
+                rootPlugin.dataFolder.absolutePath, "marks.yml")
+
+    init {
+        val file = marksFile
+        if (!file.exists()) {
+            saveDefaultFile(file)
+        }
+        reloadConfiguration()
+    }
+
+    private fun saveDefaultFile(file: File) {
+        val res = rootPlugin.getResource("marks.yml")
+        try {
+            file.parentFile.mkdirs()
+            file.delete()
+            file.createNewFile()
+            val fileOutputStream = FileOutputStream(file)
+
+            val buffer = ByteArray(4096)
+            while (true) {
+                val count = res!!.read(buffer, 0, buffer.size)
+                fileOutputStream.write(buffer, 0, count)
+                if (count < buffer.size) {
+                    break
+                }
+            }
+
+            fileOutputStream.close()
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+
+    }
+
+    fun reloadConfiguration() {
+        configuration = YamlConfiguration.loadConfiguration(
+                marksFile)
+    }
+
+    fun setMark(name: String, mark: Location?) {
+        configuration!!.set(name, mark)
+        configuration!!.save(marksFile)
+    }
+
+    fun getMark(name: String): Location? {
+        val oLocation = configuration!!.get(name) ?: return null
+        return oLocation as Location
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/MessagesManager.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/MessagesManager.java
deleted file mode 100644
index e41884a..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/MessagesManager.java
+++ /dev/null
@@ -1,87 +0,0 @@
-package top.nololiyt.worldpermissions;
-
-import org.bukkit.configuration.file.YamlConfiguration;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-
-import java.io.*;
-
-public class MessagesManager
-{
-    private RootPlugin rootPlugin;
-    
-    private YamlConfiguration configuration;
-    
-    MessagesManager(RootPlugin rootPlugin)
-    {
-        this.rootPlugin = rootPlugin;
-        File file = getMessagesFile();
-        if (!file.exists())
-        {
-            saveDefaultFile(file);
-        }
-        reloadConfiguration();
-    }
-    
-    private File getMessagesFile()
-    {
-        return new File(
-                rootPlugin.getDataFolder().getAbsolutePath(), "messages.yml");
-    }
-    
-    private void saveDefaultFile(File file)
-    {
-        InputStream res = rootPlugin.getResource("messages.yml");
-        try
-        {
-            file.getParentFile().mkdirs();
-            file.delete();
-            file.createNewFile();
-            FileOutputStream fileOutputStream = new FileOutputStream(file);
-    
-            byte[] buffer = new byte[4096];
-            for (; ; )
-            {
-                int count = res.read(buffer, 0, buffer.length);
-                fileOutputStream.write(buffer, 0, count);
-                if (count < buffer.length)
-                {
-                    break;
-                }
-            }
-    
-            fileOutputStream.close();
-        }
-        catch (IOException e)
-        {
-            e.printStackTrace();
-        }
-    }
-    
-    public void reloadConfiguration()
-    {
-        configuration = YamlConfiguration.loadConfiguration(
-                getMessagesFile());
-    }
-    
-    public String getMessage(DotDividedStringBuilder node, StringPair[] stringPairs)
-    {
-        String key = node.toString();
-        String result = configuration.getString(key);
-        
-        if(result == null)
-        {
-            rootPlugin.getLogger().severe(
-                    "File 'messages.yml' is corrupted and '" + key
-                            + "' is missing.");
-            return "";
-        }
-        
-        result = result.trim().replace('&', '§');
-        for (StringPair pair : stringPairs)
-        {
-            result = result.replace(pair.getKey(), pair.getValue());
-        }
-        return result;
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/MessagesManager.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/MessagesManager.kt
new file mode 100644
index 0000000..38b05b1
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/MessagesManager.kt
@@ -0,0 +1,71 @@
+package top.nololiyt.worldpermissions
+
+import org.bukkit.configuration.file.YamlConfiguration
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+
+import java.io.*
+
+class MessagesManager internal constructor(private val rootPlugin: RootPlugin) {
+
+    private var configuration: YamlConfiguration? = null
+
+    private val messagesFile: File
+        get() = File(
+                rootPlugin.dataFolder.absolutePath, "messages.yml")
+
+    init {
+        val file = messagesFile
+        if (!file.exists()) {
+            saveDefaultFile(file)
+        }
+        reloadConfiguration()
+    }
+
+    private fun saveDefaultFile(file: File) {
+        val res = rootPlugin.getResource("messages.yml")
+        try {
+            file.parentFile.mkdirs()
+            file.delete()
+            file.createNewFile()
+            val fileOutputStream = FileOutputStream(file)
+
+            val buffer = ByteArray(4096)
+            while (true) {
+                val count = res!!.read(buffer, 0, buffer.size)
+                fileOutputStream.write(buffer, 0, count)
+                if (count < buffer.size) {
+                    break
+                }
+            }
+
+            fileOutputStream.close()
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+
+    }
+
+    fun reloadConfiguration() {
+        configuration = YamlConfiguration.loadConfiguration(
+                messagesFile)
+    }
+
+    fun getMessage(node: DotDividedStringBuilder, stringPairs: Array<StringPair?>): String {
+        val key = node.toString()
+        var result = configuration!!.getString(key)
+
+        if (result == null) {
+            rootPlugin.logger.severe(
+                    "File 'messages.yml' is corrupted and '" + key
+                            + "' is missing.")
+            return ""
+        }
+
+        var r = result.trim().replace('&', '§')
+        for (pair in stringPairs) {
+            r = r.replace(pair!!.key, pair!!.value)
+        }
+        return r
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/PlayerListener.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/PlayerListener.java
deleted file mode 100644
index edb6c56..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/PlayerListener.java
+++ /dev/null
@@ -1,127 +0,0 @@
-package top.nololiyt.worldpermissions;
-
-import org.bukkit.Location;
-import org.bukkit.World;
-import org.bukkit.configuration.file.YamlConfiguration;
-import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerJoinEvent;
-import org.bukkit.event.player.PlayerQuitEvent;
-import org.bukkit.event.player.PlayerTeleportEvent;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.List;
-
-public class PlayerListener implements Listener
-{
-    private RootPlugin rootPlugin;
-    
-    PlayerListener(RootPlugin rootPlugin)
-    {
-        this.rootPlugin = rootPlugin;
-    }
-    
-    @EventHandler
-    public void onPlayerLogin(PlayerJoinEvent e)
-    {
-        if ((!rootPlugin.getConfig().getBoolean("offline-players-tracker.enabled")) ||
-                rootPlugin.getConfig().getBoolean("offline-players-tracker.record-only"))
-        {
-            return;
-        }
-        
-        Player player = e.getPlayer();
-        File file = new File(
-                rootPlugin.getDataFolder().getAbsolutePath(), "playersData");
-        file.mkdirs();
-        file = new File(file.getAbsolutePath(), player.getUniqueId().toString() + ".yml");
-        if (!file.exists())
-            return;
-    
-        YamlConfiguration yamlConfiguration = YamlConfiguration
-                .loadConfiguration(file);
-        Object location = yamlConfiguration.get("position");
-        if (location != null)
-            player.teleport((Location) location);
-    }
-    @EventHandler
-    public void onPlayerQuitEvent(PlayerQuitEvent e)
-    {
-        if(!rootPlugin.getConfig().getBoolean("offline-players-tracker.enabled"))
-        {
-            return;
-        }
-        Player player = e.getPlayer();
-        try
-        {
-            File file = new File(
-                    rootPlugin.getDataFolder().getAbsolutePath(), "playersData");
-            file.mkdirs();
-            file = new File(file.getAbsolutePath(), player.getUniqueId().toString() + ".yml");
-            if (!file.exists())
-                file.createNewFile();
-    
-            YamlConfiguration yamlConfiguration = YamlConfiguration
-                    .loadConfiguration(file);
-            yamlConfiguration.set("position", player.getLocation());
-            yamlConfiguration.save(file);
-        }
-        catch (IOException ex)
-        {
-            ex.printStackTrace();
-        }
-    }
-    
-    @EventHandler
-    public void onPlayerTeleport(PlayerTeleportEvent e)
-    {
-        World dest = e.getTo().getWorld();
-        if (dest.equals(e.getFrom().getWorld()))
-        {
-            return;
-        }
-    
-        String destName = dest.getName();
-    
-        Player player = e.getPlayer();
-    
-        if (!worldIsControlled(dest))
-        {
-            return;
-        }
-    
-        StringPair[] pairs = new StringPair[]{
-                StringPair.playerName(player.getDisplayName())
-        };
-    
-        if (player.hasPermission("nworldpermissions.forfreeto." + destName))
-        {
-            String message = rootPlugin.getMessagesManager().getMessage(
-                    new DotDividedStringBuilder(
-                            "messages.to-players.when-teleport-to-controlled-worlds.teleported"),
-                    pairs);
-            if (!message.isEmpty())
-                player.sendMessage(message);
-            return;
-        }
-    
-        e.setCancelled(true);
-        String message = rootPlugin.getMessagesManager().getMessage(
-                new DotDividedStringBuilder(
-                        "messages.to-players.when-teleport-to-controlled-worlds.denied"
-                ), pairs);
-        if (!message.isEmpty())
-            player.sendMessage(message);
-    }
-    
-    private boolean worldIsControlled(World world)
-    {
-        List<String> worlds = rootPlugin.getConfig().getStringList("controlled-worlds");
-        String destName = world.getName();
-        return worlds.contains(destName);
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/RootCommandExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/RootCommandExecutor.java
deleted file mode 100644
index aeea9ea..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/RootCommandExecutor.java
+++ /dev/null
@@ -1,25 +0,0 @@
-package top.nololiyt.worldpermissions;
-
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandExecutor;
-import org.bukkit.command.CommandSender;
-import top.nololiyt.worldpermissions.commands.RootRouter;
-
-public class RootCommandExecutor implements CommandExecutor
-{
-    private RootPlugin rootPlugin;
-    
-    RootCommandExecutor(RootPlugin rootPlugin)
-    {
-        this.rootPlugin = rootPlugin;
-        this.router = new RootRouter(rootPlugin);
-    }
-    
-    RootRouter router;
-    @Override
-    public boolean onCommand(CommandSender commandSender, Command command, String label, String[] args)
-    {
-        router.RouteCommand(commandSender,command,label,args);
-        return true;
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/RootCommandExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/RootCommandExecutor.kt
new file mode 100644
index 0000000..806b99f
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/RootCommandExecutor.kt
@@ -0,0 +1,20 @@
+package top.nololiyt.worldpermissions
+
+import org.bukkit.command.Command
+import org.bukkit.command.CommandExecutor
+import org.bukkit.command.CommandSender
+import top.nololiyt.worldpermissions.commands.RootRouter
+
+class RootCommandExecutor internal constructor(private val rootPlugin: RootPlugin) : CommandExecutor {
+
+    internal var router: RootRouter
+
+    init {
+        this.router = RootRouter(rootPlugin)
+    }
+
+    override fun onCommand(commandSender: CommandSender, command: Command, label: String, args: Array<String>): Boolean {
+        router.RouteCommand(commandSender, command, label, args)
+        return true
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/RootPlugin.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/RootPlugin.java
deleted file mode 100644
index fdb1758..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/RootPlugin.java
+++ /dev/null
@@ -1,38 +0,0 @@
-package top.nololiyt.worldpermissions;
-
-
-import org.bukkit.Bukkit;
-import org.bukkit.plugin.java.JavaPlugin;
-import top.nololiyt.worldpermissions.playerlisteners.LoginAndQuitListener;
-import top.nololiyt.worldpermissions.playerlisteners.TeleportListener;
-
-public class RootPlugin extends JavaPlugin {
-    private MessagesManager messagesManager;
-    
-    public MessagesManager getMessagesManager()
-    {
-        return messagesManager;
-    }
-    
-    
-    private MarksManager marksManager;
-    public MarksManager getMarksManager()
-    {
-        return marksManager;
-    }
-    @Override
-    public void onEnable() {
-        saveDefaultConfig();
-        messagesManager = new MessagesManager(this);
-        marksManager = new MarksManager(this);
-    
-        getCommand("nworldpermissions").setExecutor(new RootCommandExecutor(this));
-    
-        Bukkit.getPluginManager().registerEvents(
-                new LoginAndQuitListener(this), this);
-        Bukkit.getPluginManager().registerEvents(
-                new TeleportListener(this), this);
-    
-        new UpdateChecker(this).checkAndLog();
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/RootPlugin.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/RootPlugin.kt
new file mode 100644
index 0000000..cb7514d
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/RootPlugin.kt
@@ -0,0 +1,31 @@
+package top.nololiyt.worldpermissions
+
+
+import org.bukkit.Bukkit
+import org.bukkit.plugin.java.JavaPlugin
+import top.nololiyt.worldpermissions.playerlisteners.LoginAndQuitListener
+import top.nololiyt.worldpermissions.playerlisteners.TeleportListener
+
+class RootPlugin : JavaPlugin() {
+    var messagesManager: MessagesManager? = null
+        private set
+
+
+    var marksManager: MarksManager? = null
+        private set
+
+    override fun onEnable() {
+        saveDefaultConfig()
+        messagesManager = MessagesManager(this)
+        marksManager = MarksManager(this)
+
+        getCommand("nworldpermissions")!!.setExecutor(RootCommandExecutor(this))
+
+        Bukkit.getPluginManager().registerEvents(
+                LoginAndQuitListener(this), this)
+        Bukkit.getPluginManager().registerEvents(
+                TeleportListener(this), this)
+
+        UpdateChecker(this).checkAndLog()
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/UpdateChecker.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/UpdateChecker.java
deleted file mode 100644
index a6c02d3..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/UpdateChecker.java
+++ /dev/null
@@ -1,64 +0,0 @@
-package top.nololiyt.worldpermissions;
-
-import jdk.internal.util.xml.impl.ReaderUTF8;
-import org.bukkit.Bukkit;
-import org.bukkit.plugin.Plugin;
-import org.json.JSONArray;
-import org.json.JSONException;
-import org.json.JSONObject;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.Reader;
-import java.net.URL;
-import java.util.Scanner;
-
-public class UpdateChecker
-{
-    private Plugin plugin;
-    
-    public UpdateChecker(Plugin plugin)
-    {
-        this.plugin = plugin;
-    }
-    
-    public void checkAndLog()
-    {
-        Bukkit.getScheduler().runTaskAsynchronously(this.plugin, () -> {
-            try (InputStream inputStream = new URL(
-                    "https://api.github.com/repos/yueyinqiu/NWorldPermissions/releases/latest")
-                    .openStream())
-            {
-                JSONObject jsonObject = new JSONObject(
-                        readToEnd(inputStream)
-                );
-                String tag_name = jsonObject.getString("tag_name");
-    
-                if (!plugin.getDescription().getVersion().equalsIgnoreCase(tag_name))
-                {
-                    JSONArray assets = jsonObject.getJSONArray("assets");
-                    JSONObject asset = assets.getJSONObject(0);
-                    String browser_download_url = asset.getString("browser_download_url");
-    
-                    plugin.getLogger().warning("A new version: '" + tag_name + "' is available. " +
-                            "It can be downloaded at '" + browser_download_url + "'.");
-                }
-            }
-            catch (Exception e)
-            {
-                e.printStackTrace();
-            }
-        });
-    }
-    
-    private String readToEnd(InputStream inputStream)
-    {
-        Scanner scanner = new Scanner(inputStream);
-        StringBuilder stringBuilder = new StringBuilder();
-        while(scanner.hasNextLine())
-        {
-            stringBuilder.append(scanner.nextLine());
-        }
-        return stringBuilder.toString();
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/UpdateChecker.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/UpdateChecker.kt
new file mode 100644
index 0000000..576839c
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/UpdateChecker.kt
@@ -0,0 +1,51 @@
+package top.nololiyt.worldpermissions
+
+import jdk.internal.util.xml.impl.ReaderUTF8
+import org.bukkit.Bukkit
+import org.bukkit.plugin.Plugin
+import org.json.JSONArray
+import org.json.JSONException
+import org.json.JSONObject
+
+import java.io.IOException
+import java.io.InputStream
+import java.io.Reader
+import java.net.URL
+import java.util.Scanner
+
+class UpdateChecker(private val plugin: Plugin) {
+
+    fun checkAndLog() {
+        Bukkit.getScheduler().runTaskAsynchronously(this.plugin, Runnable {
+            try {
+                URL("https://api.github.com/repos/yueyinqiu/NWorldPermissions/releases/latest")
+                        .openStream().use { inputStream ->
+                            val jsonObject = JSONObject(
+                                    readToEnd(inputStream)
+                            )
+                            val tag_name = jsonObject.getString("tag_name")
+
+                            if (!plugin.description.version.equals(tag_name, ignoreCase = true)) {
+                                val assets = jsonObject.getJSONArray("assets")
+                                val asset = assets.getJSONObject(0)
+                                val browser_download_url = asset.getString("browser_download_url")
+
+                                plugin.logger.warning("A new version: '" + tag_name + "' is available. " +
+                                        "It can be downloaded at '" + browser_download_url + "'.")
+                            }
+                        }
+            } catch (e: Exception) {
+                e.printStackTrace()
+            }
+        });
+    }
+
+    private fun readToEnd(inputStream: InputStream): String {
+        val scanner = Scanner(inputStream)
+        val stringBuilder = StringBuilder()
+        while (scanner.hasNextLine()) {
+            stringBuilder.append(scanner.nextLine())
+        }
+        return stringBuilder.toString()
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/CommandLayer.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/CommandLayer.java
deleted file mode 100644
index ac0ef65..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/CommandLayer.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package top.nololiyt.worldpermissions.commands;
-
-import org.bukkit.command.CommandSender;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-
-public interface CommandLayer
-{
-    void execute(int layer,
-                 RootPlugin rootPlugin,
-                 DotDividedStringBuilder permission,
-                 DotDividedStringBuilder messageKey,
-                 CommandSender commandSender,
-                 String[] args);
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/CommandLayer.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/CommandLayer.kt
new file mode 100644
index 0000000..ebe98cd
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/CommandLayer.kt
@@ -0,0 +1,14 @@
+package top.nololiyt.worldpermissions.commands
+
+import org.bukkit.command.CommandSender
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+
+interface CommandLayer {
+    fun execute(layer: Int,
+                rootPlugin: RootPlugin,
+                permission: DotDividedStringBuilder,
+                messageKey: DotDividedStringBuilder,
+                commandSender: CommandSender,
+                args: Array<String>)
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Executor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Executor.java
deleted file mode 100644
index fca63f5..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Executor.java
+++ /dev/null
@@ -1,61 +0,0 @@
-package top.nololiyt.worldpermissions.commands;
-
-import org.bukkit.command.CommandSender;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-
-
-public abstract class Executor implements CommandLayer
-{
-    protected abstract String permissionName();
-    protected abstract String messageKey();
-    
-    protected abstract boolean run(int layer,
-                                   RootPlugin rootPlugin,
-                                   DotDividedStringBuilder permission,
-                                   DotDividedStringBuilder messageKey,
-                                   CommandSender commandSender,
-                                   String[] args);
-    
-    public void execute(int layer,
-                        RootPlugin rootPlugin,
-                        DotDividedStringBuilder permission,
-                        DotDividedStringBuilder messageKey,
-                        CommandSender commandSender,
-                        String[] args)
-    {
-        if (permissionName() != null)
-        {
-            permission.append(permissionName());
-            if (!commandSender.hasPermission(permission.toString()))
-            {
-                return;
-            }
-        }
-        DotDividedStringBuilder messageKeyCopy = new DotDividedStringBuilder(messageKey);
-        
-        if (messageKey() != null)
-            messageKey.append(messageKey());
-    
-        if (!run(layer,rootPlugin, permission, messageKey, commandSender, args))
-        {
-            sendHelp(messageKeyCopy, rootPlugin, commandSender);
-        }
-    }
-    
-    protected boolean sendHelp(DotDividedStringBuilder messageKey,
-                               RootPlugin rootPlugin, CommandSender commandSender)
-    {
-        messageKey.append("help");
-        StringPair[] pairs = new StringPair[]{
-                StringPair.senderName(commandSender.getName())
-        };
-        
-        String message = rootPlugin.getMessagesManager().getMessage(
-                messageKey, pairs);
-        if (!message.isEmpty())
-            commandSender.sendMessage(message);
-        return true;
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Executor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Executor.kt
new file mode 100644
index 0000000..6c78d75
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Executor.kt
@@ -0,0 +1,53 @@
+package top.nololiyt.worldpermissions.commands
+
+import org.bukkit.command.CommandSender
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+
+
+abstract class Executor : CommandLayer {
+    protected abstract fun permissionName(): String?
+    protected abstract fun messageKey(): String?
+
+    protected abstract fun run(layer: Int,
+                               rootPlugin: RootPlugin,
+                               permission: DotDividedStringBuilder,
+                               messageKey: DotDividedStringBuilder,
+                               commandSender: CommandSender,
+                               args: Array<String>): Boolean
+
+    override fun execute(layer: Int,
+                         rootPlugin: RootPlugin,
+                         permission: DotDividedStringBuilder,
+                         messageKey: DotDividedStringBuilder,
+                         commandSender: CommandSender,
+                         args: Array<String>) {
+        if (permissionName() != null) {
+            permission.append(permissionName()!!)
+            if (!commandSender.hasPermission(permission.toString())) {
+                return
+            }
+        }
+        val messageKeyCopy = DotDividedStringBuilder(messageKey)
+
+        if (messageKey() != null)
+            messageKey.append(messageKey()!!)
+
+        if (!run(layer, rootPlugin, permission, messageKey, commandSender, args)) {
+            sendHelp(messageKeyCopy, rootPlugin, commandSender)
+        }
+    }
+
+    protected fun sendHelp(messageKey: DotDividedStringBuilder,
+                           rootPlugin: RootPlugin, commandSender: CommandSender): Boolean {
+        messageKey.append("help")
+        val pairs = arrayOf<StringPair?>(StringPair.senderName(commandSender.name))
+
+        val message = rootPlugin.messagesManager!!.getMessage(
+                messageKey, pairs)
+        if (!message.isBlank())
+            commandSender.sendMessage(message)
+        return true
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/RootRouter.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/RootRouter.java
deleted file mode 100644
index 7d722cd..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/RootRouter.java
+++ /dev/null
@@ -1,70 +0,0 @@
-package top.nololiyt.worldpermissions.commands;
-
-import org.bukkit.command.Command;
-import org.bukkit.command.CommandSender;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.commands.reload.ReloadRouter;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.commands.config.ConfigRouter;
-import top.nololiyt.worldpermissions.commands.marks.MarksRouter;
-import top.nololiyt.worldpermissions.commands.tp.TpRouter;
-
-public class RootRouter extends Router
-{
-    
-    private RootPlugin rootPlugin;
-    
-    public RootRouter(RootPlugin rootPlugin)
-    {
-        this.rootPlugin = rootPlugin;
-    }
-    
-    
-    public void RouteCommand(CommandSender commandSender, Command command,
-                                String label, String[] args)
-    {
-        DotDividedStringBuilder messagesRoot = new DotDividedStringBuilder("messages");
-        DotDividedStringBuilder permissionRoot = new DotDividedStringBuilder("nworldpermissions");
-    
-        execute(0,rootPlugin,permissionRoot,messagesRoot,commandSender,args);
-        
-    }
-    
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return null;
-    }
-    
-    /**
-     * Return the next layer matching the arg.
-     * If no layer match it, please return 'null' and the help list will be sent.
-     *
-     * @param arg
-     * @return
-     */
-    @Override
-    protected CommandLayer nextLayer(String arg)
-    {
-        switch (arg)
-        {
-            case "config":
-                return new ConfigRouter();
-            case "tp":
-                return new TpRouter();
-            case "marks":
-                return new MarksRouter();
-            case "reload":
-                return new ReloadRouter();
-            default:
-                return null;
-        }
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/RootRouter.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/RootRouter.kt
new file mode 100644
index 0000000..32032a9
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/RootRouter.kt
@@ -0,0 +1,49 @@
+package top.nololiyt.worldpermissions.commands
+
+import org.bukkit.command.Command
+import org.bukkit.command.CommandSender
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.commands.reload.ReloadRouter
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.commands.config.ConfigRouter
+import top.nololiyt.worldpermissions.commands.marks.MarksRouter
+import top.nololiyt.worldpermissions.commands.tp.TpRouter
+
+class RootRouter(private val rootPlugin: RootPlugin) : Router() {
+
+
+    fun RouteCommand(commandSender: CommandSender, command: Command,
+                     label: String, args: Array<String>) {
+        val messagesRoot = DotDividedStringBuilder("messages")
+        val permissionRoot = DotDividedStringBuilder("nworldpermissions")
+
+        execute(0, rootPlugin, permissionRoot, messagesRoot, commandSender, args)
+
+    }
+
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return null
+    }
+
+    /**
+     * Return the next layer matching the arg.
+     * If no layer match it, please return 'null' and the help list will be sent.
+     *
+     * @param arg
+     * @return
+     */
+    override fun nextLayer(arg: String): CommandLayer? {
+        when (arg) {
+            "config" -> return ConfigRouter()
+            "tp" -> return TpRouter()
+            "marks" -> return MarksRouter()
+            "reload" -> return ReloadRouter()
+            else -> return null
+        }
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Router.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Router.java
deleted file mode 100644
index 13cf25e..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Router.java
+++ /dev/null
@@ -1,75 +0,0 @@
-package top.nololiyt.worldpermissions.commands;
-
-import org.bukkit.command.CommandSender;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-
-public abstract class Router implements CommandLayer
-{
-    protected abstract String permissionName();
-    protected abstract String messageKey();
-    /**
-     * Return the next layer matching the arg.
-     * If no layer match it, please return 'null' and the help list will be sent.
-     * @param arg
-     * @return
-     */
-    protected abstract CommandLayer nextLayer(String arg);
-    
-    public void execute(int layer,
-                        RootPlugin rootPlugin,
-                        DotDividedStringBuilder permission,
-                        DotDividedStringBuilder messageKey,
-                        CommandSender commandSender,
-                        String[] args)
-    {
-        if (permissionName() != null)
-        {
-            permission.append(permissionName());
-            if (!commandSender.hasPermission(permission.toString()))
-            {
-                return;
-            }
-        }
-        if (messageKey() != null)
-            messageKey.append(messageKey());
-    
-        if (args.length <= layer)
-        {
-            sendHelp(messageKey, rootPlugin, commandSender);
-            return;
-        }
-        
-        CommandLayer nextLayer = nextLayer(args[layer].toLowerCase());
-        if (nextLayer == null)
-        {
-            sendHelp(messageKey, rootPlugin, commandSender);
-            return;
-        }
-        nextLayer.execute(
-                layer + 1,
-                rootPlugin,
-                permission,
-                messageKey,
-                commandSender,
-                args
-        );
-    }
-    
-    
-    private boolean sendHelp(DotDividedStringBuilder messageKey,
-                             RootPlugin rootPlugin, CommandSender commandSender)
-    {
-        messageKey.append("help");
-        StringPair[] pairs = new StringPair[]{
-                StringPair.senderName(commandSender.getName())
-        };
-        
-        String message = rootPlugin.getMessagesManager().getMessage(
-                messageKey, pairs);
-        if (!message.isEmpty())
-            commandSender.sendMessage(message);
-        return true;
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Router.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Router.kt
new file mode 100644
index 0000000..e8f51a8
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/Router.kt
@@ -0,0 +1,66 @@
+package top.nololiyt.worldpermissions.commands
+
+import org.bukkit.command.CommandSender
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+
+abstract class Router : CommandLayer {
+    protected abstract fun permissionName(): String?
+    protected abstract fun messageKey(): String?
+    /**
+     * Return the next layer matching the arg.
+     * If no layer match it, please return 'null' and the help list will be sent.
+     * @param arg
+     * @return
+     */
+    protected abstract fun nextLayer(arg: String): CommandLayer?
+
+    override fun execute(layer: Int,
+                         rootPlugin: RootPlugin,
+                         permission: DotDividedStringBuilder,
+                         messageKey: DotDividedStringBuilder,
+                         commandSender: CommandSender,
+                         args: Array<String>) {
+        if (permissionName() != null) {
+            permission.append(permissionName()!!)
+            if (!commandSender.hasPermission(permission.toString())) {
+                return
+            }
+        }
+        if (messageKey() != null)
+            messageKey.append(messageKey()!!)
+
+        if (args.size <= layer) {
+            sendHelp(messageKey, rootPlugin, commandSender)
+            return
+        }
+
+        val nextLayer = nextLayer(args[layer].toLowerCase())
+        if (nextLayer == null) {
+            sendHelp(messageKey, rootPlugin, commandSender)
+            return
+        }
+        nextLayer.execute(
+                layer + 1,
+                rootPlugin,
+                permission,
+                messageKey,
+                commandSender,
+                args
+        )
+    }
+
+
+    private fun sendHelp(messageKey: DotDividedStringBuilder,
+                         rootPlugin: RootPlugin, commandSender: CommandSender): Boolean {
+        messageKey.append("help")
+        val pairs = arrayOf<StringPair?>(StringPair.senderName(commandSender.name))
+
+        val message = rootPlugin.messagesManager!!.getMessage(
+                messageKey, pairs)
+        if (!message.isBlank())
+            commandSender.sendMessage(message)
+        return true
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/AddExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/AddExecutor.java
deleted file mode 100644
index ad375bf..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/AddExecutor.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package top.nololiyt.worldpermissions.commands.config;
-
-import org.bukkit.command.CommandSender;
-import org.bukkit.configuration.Configuration;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-import top.nololiyt.worldpermissions.commands.Executor;
-
-import java.util.List;
-
-public class AddExecutor extends Executor
-{
-    protected final static String layerName = "add";
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected boolean run(int layer, RootPlugin rootPlugin, DotDividedStringBuilder permission,
-                          DotDividedStringBuilder messageKey, CommandSender commandSender,
-                          String[] args)
-    {
-        if (args.length - 1 != layer)
-            return false;
-        
-        StringPair[] cPairs = new StringPair[]{
-                StringPair.worldName(args[layer]),
-                StringPair.senderName(commandSender.getName())
-        };
-    
-        Configuration config = rootPlugin.getConfig();
-        List<String> worlds = config.getStringList("controlled-worlds");
-        if (!worlds.contains(args[layer]))
-        {
-            worlds.add(args[layer]);
-        }
-        config.set("controlled-worlds", worlds);
-        rootPlugin.saveConfig();
-    
-        String message = rootPlugin.getMessagesManager().getMessage(
-                messageKey.append("completed"), cPairs);
-        if (!message.isEmpty())
-            commandSender.sendMessage(message);
-        return true;
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/AddExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/AddExecutor.kt
new file mode 100644
index 0000000..1938f8d
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/AddExecutor.kt
@@ -0,0 +1,46 @@
+package top.nololiyt.worldpermissions.commands.config
+
+import org.bukkit.command.CommandSender
+import org.bukkit.configuration.Configuration
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+import top.nololiyt.worldpermissions.commands.Executor
+
+class AddExecutor : Executor() {
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    override fun run(layer: Int, rootPlugin: RootPlugin, permission: DotDividedStringBuilder,
+                     messageKey: DotDividedStringBuilder, commandSender: CommandSender,
+                     args: Array<String>): Boolean {
+        if (args.size - 1 != layer)
+            return false
+
+        val cPairs = arrayOf<StringPair?>(StringPair.worldName(args[layer]), StringPair.senderName(commandSender.name))
+
+        val config = rootPlugin.config
+        val worlds = config.getStringList("controlled-worlds")
+        if (!worlds.contains(args[layer])) {
+            worlds.add(args[layer])
+        }
+        config.set("controlled-worlds", worlds)
+        rootPlugin.saveConfig()
+
+        val message = rootPlugin.messagesManager!!.getMessage(
+                messageKey.append("completed"), cPairs)
+        if (!message.isBlank())
+            commandSender.sendMessage(message)
+        return true
+    }
+
+    companion object {
+        protected val layerName = "add"
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/ConfigRouter.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/ConfigRouter.java
deleted file mode 100644
index 9275d46..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/ConfigRouter.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package top.nololiyt.worldpermissions.commands.config;
-
-import top.nololiyt.worldpermissions.commands.CommandLayer;
-import top.nololiyt.worldpermissions.commands.Router;
-
-public class ConfigRouter extends Router
-{
-    protected final static String layerName = "config";
-    @Override
-    protected String permissionName()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    /**
-     * Return the next layer matching the arg.
-     * If no layer match it, please return 'null' and the help list will be sent.
-     *
-     * @param arg
-     * @return
-     */
-    @Override
-    protected CommandLayer nextLayer(String arg)
-    {
-        switch (arg)
-        {
-            case "add":
-                return new AddExecutor();
-            case "remove":
-                return new RemoveExecutor();
-            default:
-                return null;
-        }
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/ConfigRouter.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/ConfigRouter.kt
new file mode 100644
index 0000000..eb8368f
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/ConfigRouter.kt
@@ -0,0 +1,33 @@
+package top.nololiyt.worldpermissions.commands.config
+
+import top.nololiyt.worldpermissions.commands.CommandLayer
+import top.nololiyt.worldpermissions.commands.Router
+
+class ConfigRouter : Router() {
+    override fun permissionName(): String? {
+        return layerName
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    /**
+     * Return the next layer matching the arg.
+     * If no layer match it, please return 'null' and the help list will be sent.
+     *
+     * @param arg
+     * @return
+     */
+    override fun nextLayer(arg: String): CommandLayer? {
+        when (arg) {
+            "add" -> return AddExecutor()
+            "remove" -> return RemoveExecutor()
+            else -> return null
+        }
+    }
+
+    companion object {
+        protected val layerName = "config"
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/RemoveExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/RemoveExecutor.java
deleted file mode 100644
index ab1197d..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/RemoveExecutor.java
+++ /dev/null
@@ -1,55 +0,0 @@
-package top.nololiyt.worldpermissions.commands.config;
-
-import org.bukkit.command.CommandSender;
-import org.bukkit.configuration.Configuration;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-import top.nololiyt.worldpermissions.commands.Executor;
-
-import java.util.List;
-
-public class RemoveExecutor extends Executor
-{
-    protected final static String layerName = "remove";
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected boolean run(int layer, RootPlugin rootPlugin, DotDividedStringBuilder permission,
-                          DotDividedStringBuilder messageKey, CommandSender commandSender,
-                          String[] args)
-    {
-        if (args.length - 1 != layer)
-            return false;
-        
-        StringPair[] cPairs = new StringPair[]{
-                StringPair.worldName(args[layer]),
-                StringPair.senderName(commandSender.getName())
-        };
-    
-        Configuration config = rootPlugin.getConfig();
-        List<String> worlds = config.getStringList("controlled-worlds");
-    
-        worlds.remove(args[layer]);
-        config.set("controlled-worlds", worlds);
-        
-        rootPlugin.saveConfig();
-    
-        String message = rootPlugin.getMessagesManager().getMessage(
-                messageKey.append("completed"), cPairs);
-        if (!message.isEmpty())
-            commandSender.sendMessage(message);
-        return true;
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/RemoveExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/RemoveExecutor.kt
new file mode 100644
index 0000000..deebada
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/config/RemoveExecutor.kt
@@ -0,0 +1,46 @@
+package top.nololiyt.worldpermissions.commands.config
+
+import org.bukkit.command.CommandSender
+import org.bukkit.configuration.Configuration
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+import top.nololiyt.worldpermissions.commands.Executor
+
+class RemoveExecutor : Executor() {
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    override fun run(layer: Int, rootPlugin: RootPlugin, permission: DotDividedStringBuilder,
+                     messageKey: DotDividedStringBuilder, commandSender: CommandSender,
+                     args: Array<String>): Boolean {
+        if (args.size - 1 != layer)
+            return false
+
+        val cPairs = arrayOf<StringPair?>(StringPair.worldName(args[layer]), StringPair.senderName(commandSender.name))
+
+        val config = rootPlugin.config
+        val worlds = config.getStringList("controlled-worlds")
+
+        worlds.remove(args[layer])
+        config.set("controlled-worlds", worlds)
+
+        rootPlugin.saveConfig()
+
+        val message = rootPlugin.messagesManager!!.getMessage(
+                messageKey.append("completed"), cPairs)
+        if (!message.isBlank())
+            commandSender.sendMessage(message)
+        return true
+    }
+
+    companion object {
+        protected val layerName = "remove"
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/AddExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/AddExecutor.java
deleted file mode 100644
index be4d69a..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/AddExecutor.java
+++ /dev/null
@@ -1,89 +0,0 @@
-package top.nololiyt.worldpermissions.commands.marks;
-
-import org.bukkit.command.CommandSender;
-import org.bukkit.configuration.file.YamlConfiguration;
-import org.bukkit.entity.Player;
-import top.nololiyt.worldpermissions.MarksManager;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-import top.nololiyt.worldpermissions.commands.Executor;
-
-import java.io.File;
-import java.io.IOException;
-
-public class AddExecutor extends Executor
-{
-    protected final static String layerName = "add";
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected boolean run(int layer, RootPlugin rootPlugin, DotDividedStringBuilder permission,
-                          DotDividedStringBuilder messageKey, CommandSender commandSender,
-                          String[] args)
-    {
-        if (!(commandSender instanceof Player))
-        {
-            StringPair[] pairs = new StringPair[]{
-                    StringPair.senderName(commandSender.getName()),
-            };
-    
-            String message = rootPlugin.getMessagesManager().getMessage(
-                    messageKey.append("without-a-position"), pairs);
-            if (!message.isEmpty())
-                commandSender.sendMessage(message);
-            return true;
-        }
-    
-        if (args.length - 1 != layer)
-            return false;
-    
-        Player sender = ((Player) commandSender);
-        StringPair[] cPairs = new StringPair[]{
-                StringPair.markName(args[layer]),
-                StringPair.senderName(sender.getDisplayName())
-        };
-        try
-        {
-            MarksManager marksManager = rootPlugin.getMarksManager();
-            if(marksManager.getMark(args[layer]) != null)
-            {
-                String message = rootPlugin.getMessagesManager().getMessage(
-                        messageKey.append("with-occupied-name"), cPairs);
-                if (!message.isEmpty())
-                    sender.sendMessage(message);
-                
-                return true;
-            }
-            marksManager.setMark(args[layer],sender.getLocation());
-    
-    
-            String message = rootPlugin.getMessagesManager().getMessage(
-                    messageKey.append("completed"), cPairs);
-            if (!message.isEmpty())
-                sender.sendMessage(message);
-            return true;
-        }
-        catch(IOException ex)
-        {
-            ex.printStackTrace();
-    
-            String message = rootPlugin.getMessagesManager().getMessage(
-                    messageKey.append("failed"), cPairs);
-            if (!message.isEmpty())
-                sender.sendMessage(message);
-            return true;
-        }
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/AddExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/AddExecutor.kt
new file mode 100644
index 0000000..4e192c4
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/AddExecutor.kt
@@ -0,0 +1,75 @@
+package top.nololiyt.worldpermissions.commands.marks
+
+import org.bukkit.command.CommandSender
+import org.bukkit.configuration.file.YamlConfiguration
+import org.bukkit.entity.Player
+import top.nololiyt.worldpermissions.MarksManager
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+import top.nololiyt.worldpermissions.commands.Executor
+
+import java.io.File
+import java.io.IOException
+
+class AddExecutor : Executor() {
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    override fun run(layer: Int, rootPlugin: RootPlugin, permission: DotDividedStringBuilder,
+                     messageKey: DotDividedStringBuilder, commandSender: CommandSender,
+                     args: Array<String>): Boolean {
+        if (commandSender !is Player) {
+            val pairs = arrayOf<StringPair?>(StringPair.senderName(commandSender.name))
+
+            val message = rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("without-a-position"), pairs)
+            if (!message.isBlank())
+                commandSender.sendMessage(message)
+            return true
+        }
+
+        if (args.size - 1 != layer)
+            return false
+
+        val cPairs = arrayOf<StringPair?>(StringPair.markName(args[layer]), StringPair.senderName(commandSender.displayName))
+        try {
+            val marksManager = rootPlugin.marksManager
+            if (marksManager!!.getMark(args[layer]) != null) {
+                val message = rootPlugin.messagesManager!!.getMessage(
+                        messageKey.append("with-occupied-name"), cPairs)
+                if (!message.isBlank())
+                    commandSender.sendMessage(message)
+
+                return true
+            }
+            marksManager.setMark(args[layer], commandSender.location)
+
+
+            val message = rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("completed"), cPairs)
+            if (!message.isBlank())
+                commandSender.sendMessage(message)
+            return true
+        } catch (ex: IOException) {
+            ex.printStackTrace()
+
+            val message = rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("failed"), cPairs)
+            if (!message.isBlank())
+                commandSender.sendMessage(message)
+            return true
+        }
+
+    }
+
+    companion object {
+        protected val layerName = "add"
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/MarksRouter.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/MarksRouter.java
deleted file mode 100644
index 61b1405..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/MarksRouter.java
+++ /dev/null
@@ -1,40 +0,0 @@
-package top.nololiyt.worldpermissions.commands.marks;
-
-import top.nololiyt.worldpermissions.commands.CommandLayer;
-import top.nololiyt.worldpermissions.commands.Router;
-
-public class MarksRouter extends Router
-{
-    protected final static String layerName = "marks";
-    @Override
-    protected String permissionName()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    /**
-     * Return the next layer matching the arg.
-     * If no layer match it, please return 'null' and the help list will be sent.
-     *
-     * @param arg
-     * @return
-     */
-    @Override
-    protected CommandLayer nextLayer(String arg)
-    {
-        switch (arg)
-        {
-            case "add":
-                return new AddExecutor();
-            case "remove":
-                return new RemoveExecutor();
-            default:
-                return null;
-        }
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/MarksRouter.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/MarksRouter.kt
new file mode 100644
index 0000000..d6cc758
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/MarksRouter.kt
@@ -0,0 +1,33 @@
+package top.nololiyt.worldpermissions.commands.marks
+
+import top.nololiyt.worldpermissions.commands.CommandLayer
+import top.nololiyt.worldpermissions.commands.Router
+
+class MarksRouter : Router() {
+    override fun permissionName(): String? {
+        return layerName
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    /**
+     * Return the next layer matching the arg.
+     * If no layer match it, please return 'null' and the help list will be sent.
+     *
+     * @param arg
+     * @return
+     */
+    override fun nextLayer(arg: String): CommandLayer? {
+        when (arg) {
+            "add" -> return AddExecutor()
+            "remove" -> return RemoveExecutor()
+            else -> return null
+        }
+    }
+
+    companion object {
+        protected val layerName = "marks"
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/RemoveExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/RemoveExecutor.java
deleted file mode 100644
index 3d6bf41..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/RemoveExecutor.java
+++ /dev/null
@@ -1,74 +0,0 @@
-package top.nololiyt.worldpermissions.commands.marks;
-
-import org.bukkit.command.CommandSender;
-import org.bukkit.configuration.file.YamlConfiguration;
-import top.nololiyt.worldpermissions.MarksManager;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-import top.nololiyt.worldpermissions.commands.Executor;
-
-import java.io.File;
-import java.io.IOException;
-
-public class RemoveExecutor extends Executor
-{
-    protected final static String layerName = "remove";
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected boolean run(int layer, RootPlugin rootPlugin, DotDividedStringBuilder permission,
-                          DotDividedStringBuilder messageKey, CommandSender commandSender,
-                          String[] args)
-    {
-        if (args.length - 1 != layer)
-            return false;
-        
-        StringPair[] cPairs = new StringPair[]{
-                StringPair.markName(args[layer]),
-                StringPair.senderName(commandSender.getName())
-        };
-        try
-        {
-            MarksManager marksManager = rootPlugin.getMarksManager();
-            
-            if(marksManager.getMark(args[layer]) == null)
-            {
-                String message = rootPlugin.getMessagesManager().getMessage(
-                        messageKey.append("no-such-mark"), cPairs);
-                if (!message.isEmpty())
-                    commandSender.sendMessage(message);
-                return true;
-            }
-    
-            marksManager.setMark(args[layer], null);
-        }
-        catch(IOException ex)
-        {
-            ex.printStackTrace();
-    
-            String message = rootPlugin.getMessagesManager().getMessage(
-                    messageKey.append("failed"), cPairs);
-            if (!message.isEmpty())
-                commandSender.sendMessage(message);
-            return true;
-        }
-    
-        String message = rootPlugin.getMessagesManager().getMessage(
-                messageKey.append("completed"), cPairs);
-        if (!message.isEmpty())
-            commandSender.sendMessage(message);
-        return true;
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/RemoveExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/RemoveExecutor.kt
new file mode 100644
index 0000000..b81b8e8
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/marks/RemoveExecutor.kt
@@ -0,0 +1,65 @@
+package top.nololiyt.worldpermissions.commands.marks
+
+import com.sun.xml.internal.ws.client.SenderException
+import org.bukkit.command.CommandSender
+import org.bukkit.configuration.file.YamlConfiguration
+import top.nololiyt.worldpermissions.MarksManager
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+import top.nololiyt.worldpermissions.commands.Executor
+
+import java.io.File
+import java.io.IOException
+
+class RemoveExecutor : Executor() {
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    override fun run(layer: Int, rootPlugin: RootPlugin, permission: DotDividedStringBuilder,
+                     messageKey: DotDividedStringBuilder, commandSender: CommandSender,
+                     args: Array<String>): Boolean {
+        if (args.size - 1 != layer)
+            return false
+
+        val cPairs = arrayOf<StringPair?>(StringPair.markName(args[layer]), StringPair.senderName(commandSender.name))
+        try {
+            val marksManager = rootPlugin.marksManager
+
+            if (marksManager!!.getMark(args[layer]) == null) {
+                val message = rootPlugin.messagesManager!!.getMessage(
+                        messageKey.append("no-such-mark"), cPairs)
+                if (!message.isBlank())
+                    commandSender.sendMessage(message)
+                return true
+            }
+
+            marksManager.setMark(args[layer], null);
+
+            val message = rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("completed"), cPairs)
+            if (!message.isBlank())
+                commandSender.sendMessage(message)
+            return true
+
+        } catch (ex: IOException) {
+            ex.printStackTrace()
+
+            val message = rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("failed"), cPairs)
+            if (!message.isBlank())
+                commandSender.sendMessage(message)
+            return true
+        }
+    }
+
+    companion object {
+        protected val layerName = "remove"
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ConfigExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ConfigExecutor.java
deleted file mode 100644
index 51e3441..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ConfigExecutor.java
+++ /dev/null
@@ -1,44 +0,0 @@
-package top.nololiyt.worldpermissions.commands.reload;
-
-import org.bukkit.command.CommandSender;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-import top.nololiyt.worldpermissions.commands.Executor;
-
-public class ConfigExecutor extends Executor
-{
-    protected final static String layerName = "config";
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected boolean run(int layer, RootPlugin rootPlugin, DotDividedStringBuilder permission,
-                          DotDividedStringBuilder messageKey, CommandSender commandSender,
-                          String[] args)
-    {
-        rootPlugin.reloadConfig();
-    
-        messageKey.append("completed");
-        
-        StringPair[] pairs = new StringPair[]{
-                StringPair.senderName(commandSender.getName())
-        };
-    
-        String message = rootPlugin.getMessagesManager().getMessage(
-                messageKey, pairs);
-        if (!message.isEmpty())
-            commandSender.sendMessage(message);
-        return true;
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ConfigExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ConfigExecutor.kt
new file mode 100644
index 0000000..c434b25
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ConfigExecutor.kt
@@ -0,0 +1,38 @@
+package top.nololiyt.worldpermissions.commands.reload
+
+import org.bukkit.command.CommandSender
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+import top.nololiyt.worldpermissions.commands.Executor
+
+class ConfigExecutor : Executor() {
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    override fun run(layer: Int, rootPlugin: RootPlugin, permission: DotDividedStringBuilder,
+                     messageKey: DotDividedStringBuilder, commandSender: CommandSender,
+                     args: Array<String>): Boolean {
+        rootPlugin.reloadConfig()
+
+        messageKey.append("completed")
+
+        val pairs = arrayOf<StringPair?>(StringPair.senderName(commandSender.name))
+
+        val message = rootPlugin.messagesManager!!.getMessage(
+                messageKey, pairs)
+        if (!message.isBlank())
+            commandSender.sendMessage(message)
+        return true
+    }
+
+    companion object {
+        protected val layerName = "config"
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MarksExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MarksExecutor.java
deleted file mode 100644
index fc2c177..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MarksExecutor.java
+++ /dev/null
@@ -1,44 +0,0 @@
-package top.nololiyt.worldpermissions.commands.reload;
-
-import org.bukkit.command.CommandSender;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.commands.Executor;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-
-public class MarksExecutor extends Executor
-{
-    protected final static String layerName = "marks";
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected boolean run(int layer, RootPlugin rootPlugin, DotDividedStringBuilder permission,
-                          DotDividedStringBuilder messageKey, CommandSender commandSender,
-                          String[] args)
-    {
-        rootPlugin.getMarksManager().reloadConfiguration();
-    
-        messageKey.append("completed");
-        
-        StringPair[] pairs = new StringPair[]{
-                StringPair.senderName(commandSender.getName())
-        };
-    
-        String message = rootPlugin.getMessagesManager().getMessage(
-                messageKey, pairs);
-        if (!message.isEmpty())
-            commandSender.sendMessage(message);
-        return true;
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MarksExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MarksExecutor.kt
new file mode 100644
index 0000000..1369c8a
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MarksExecutor.kt
@@ -0,0 +1,38 @@
+package top.nololiyt.worldpermissions.commands.reload
+
+import org.bukkit.command.CommandSender
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.commands.Executor
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+
+class MarksExecutor : Executor() {
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    override fun run(layer: Int, rootPlugin: RootPlugin, permission: DotDividedStringBuilder,
+                     messageKey: DotDividedStringBuilder, commandSender: CommandSender,
+                     args: Array<String>): Boolean {
+        rootPlugin.marksManager!!.reloadConfiguration()
+
+        messageKey.append("completed")
+
+        val pairs = arrayOf<StringPair?>(StringPair.senderName(commandSender.name))
+
+        val message = rootPlugin.messagesManager!!.getMessage(
+                messageKey, pairs)
+        if (!message.isBlank())
+            commandSender.sendMessage(message)
+        return true
+    }
+
+    companion object {
+        protected val layerName = "marks"
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MessagesExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MessagesExecutor.java
deleted file mode 100644
index 90817bc..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MessagesExecutor.java
+++ /dev/null
@@ -1,44 +0,0 @@
-package top.nololiyt.worldpermissions.commands.reload;
-
-import org.bukkit.command.CommandSender;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-import top.nololiyt.worldpermissions.commands.Executor;
-
-public class MessagesExecutor extends Executor
-{
-    protected final static String layerName = "messages";
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected boolean run(int layer, RootPlugin rootPlugin, DotDividedStringBuilder permission,
-                          DotDividedStringBuilder messageKey, CommandSender commandSender,
-                          String[] args)
-    {
-        rootPlugin.getMessagesManager().reloadConfiguration();
-    
-        messageKey.append("completed");
-        
-        StringPair[] pairs = new StringPair[]{
-                StringPair.senderName(commandSender.getName())
-        };
-        
-        String message = rootPlugin.getMessagesManager().getMessage(
-                messageKey, pairs);
-        if (!message.isEmpty())
-            commandSender.sendMessage(message);
-        return true;
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MessagesExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MessagesExecutor.kt
new file mode 100644
index 0000000..66558d5
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/MessagesExecutor.kt
@@ -0,0 +1,38 @@
+package top.nololiyt.worldpermissions.commands.reload
+
+import org.bukkit.command.CommandSender
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+import top.nololiyt.worldpermissions.commands.Executor
+
+class MessagesExecutor : Executor() {
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    override fun run(layer: Int, rootPlugin: RootPlugin, permission: DotDividedStringBuilder,
+                     messageKey: DotDividedStringBuilder, commandSender: CommandSender,
+                     args: Array<String>): Boolean {
+        rootPlugin.messagesManager!!.reloadConfiguration()
+
+        messageKey.append("completed")
+
+        val pairs = arrayOf<StringPair?>(StringPair.senderName(commandSender.name))
+
+        val message = rootPlugin.messagesManager!!.getMessage(
+                messageKey, pairs)
+        if (!message.isBlank())
+            commandSender.sendMessage(message)
+        return true
+    }
+
+    companion object {
+        protected val layerName = "messages"
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ReloadRouter.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ReloadRouter.java
deleted file mode 100644
index 1566474..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ReloadRouter.java
+++ /dev/null
@@ -1,43 +0,0 @@
-package top.nololiyt.worldpermissions.commands.reload;
-
-import top.nololiyt.worldpermissions.commands.CommandLayer;
-import top.nololiyt.worldpermissions.commands.Router;
-
-public class ReloadRouter extends Router
-{
-    protected final static String layerName = "reload";
-    @Override
-    protected String permissionName()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    /**
-     * Return the next layer matching the arg.
-     * If no layer match it, please return 'null' and the help list will be sent.
-     *
-     * @param arg
-     * @return
-     */
-    @Override
-    protected CommandLayer nextLayer(String arg)
-    {
-        switch (arg)
-        {
-            case "config":
-                return new ConfigExecutor();
-            case "messages":
-                return new MessagesExecutor();
-            case "marks":
-                return new MarksExecutor();
-            default:
-                return null;
-        }
-    }
-}
-
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ReloadRouter.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ReloadRouter.kt
new file mode 100644
index 0000000..7ed5fcc
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/reload/ReloadRouter.kt
@@ -0,0 +1,35 @@
+package top.nololiyt.worldpermissions.commands.reload
+
+import top.nololiyt.worldpermissions.commands.CommandLayer
+import top.nololiyt.worldpermissions.commands.Router
+
+class ReloadRouter : Router() {
+    override fun permissionName(): String? {
+        return layerName
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    /**
+     * Return the next layer matching the arg.
+     * If no layer match it, please return 'null' and the help list will be sent.
+     *
+     * @param arg
+     * @return
+     */
+    override fun nextLayer(arg: String): CommandLayer? {
+        when (arg) {
+            "config" -> return ConfigExecutor()
+            "messages" -> return MessagesExecutor()
+            "marks" -> return MarksExecutor()
+            else -> return null
+        }
+    }
+
+    companion object {
+        protected val layerName = "reload"
+    }
+}
+
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OfflineExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OfflineExecutor.java
deleted file mode 100644
index 25cc26f..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OfflineExecutor.java
+++ /dev/null
@@ -1,106 +0,0 @@
-package top.nololiyt.worldpermissions.commands.tp;
-
-import org.bukkit.Bukkit;
-import org.bukkit.Location;
-import org.bukkit.World;
-import org.bukkit.command.CommandSender;
-import org.bukkit.configuration.file.YamlConfiguration;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-import top.nololiyt.worldpermissions.commands.Executor;
-
-import java.io.File;
-import java.io.IOException;
-
-public class OfflineExecutor extends Executor
-{
-    protected final static String layerName = "offline";
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected boolean run(int layer, RootPlugin rootPlugin, DotDividedStringBuilder permission,
-                          DotDividedStringBuilder messageKey, CommandSender commandSender,
-                          String[] args)
-    {
-        if (args.length - 1 != layer + 1)
-            return false;
-    
-        String worldName = args[layer];
-        String markName = args[layer + 1];
-        
-        StringPair[] basePairs = new StringPair[]{
-                StringPair.markName(markName),
-                StringPair.worldName(worldName),
-                StringPair.senderName(commandSender.getName())
-        };
-        
-        if ((!rootPlugin.getConfig().getBoolean("offline-players-tracker.enabled")) ||
-                rootPlugin.getConfig().getBoolean("offline-players-tracker.record-only"))
-        {
-            commandSender.sendMessage(rootPlugin.getMessagesManager().getMessage(
-                    messageKey.append("tracker-not-enabled"), basePairs));
-            return true;
-        }
-        
-        World world = Bukkit.getWorld(args[layer]);
-        if (world == null)
-        {
-            commandSender.sendMessage(rootPlugin.getMessagesManager().getMessage(
-                    messageKey.append("no-such-world"), basePairs));
-            return true;
-        }
-    
-        Location location = rootPlugin.getMarksManager().getMark(markName);
-        if (location == null)
-        {
-            commandSender.sendMessage(rootPlugin.getMessagesManager().getMessage(
-                    messageKey.append("no-such-mark"), basePairs));
-            return true;
-        }
-    
-        File dir = new File(
-                rootPlugin.getDataFolder().getAbsolutePath(), "playersData");
-        dir.mkdirs();
-    
-        int count = 0;
-        for (File file : dir.listFiles())
-        {
-            YamlConfiguration configuration =
-                    YamlConfiguration.loadConfiguration(file);
-            if (configuration.getLocation("position").getWorld().equals(world))
-            {
-                configuration.set("position", location);
-                try
-                {
-                    configuration.save(file);
-                    count++;
-                }
-                catch (IOException ex)
-                {
-                    ex.printStackTrace();
-                }
-            }
-        }
-        StringPair[] cPairs = new StringPair[]{
-                StringPair.teleportedCount(String.valueOf(count)),
-                StringPair.markName(markName),
-                StringPair.worldName(worldName),
-                StringPair.senderName(commandSender.getName())
-        };
-        commandSender.sendMessage(rootPlugin.getMessagesManager().getMessage(
-                messageKey.append("completed"), cPairs));
-        return true;
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OfflineExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OfflineExecutor.kt
new file mode 100644
index 0000000..4fab99d
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OfflineExecutor.kt
@@ -0,0 +1,84 @@
+package top.nololiyt.worldpermissions.commands.tp
+
+import org.bukkit.Bukkit
+import org.bukkit.Location
+import org.bukkit.World
+import org.bukkit.command.CommandSender
+import org.bukkit.configuration.file.YamlConfiguration
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+import top.nololiyt.worldpermissions.commands.Executor
+
+import java.io.File
+import java.io.IOException
+
+class OfflineExecutor : Executor() {
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    override fun run(layer: Int, rootPlugin: RootPlugin, permission: DotDividedStringBuilder,
+                     messageKey: DotDividedStringBuilder, commandSender: CommandSender,
+                     args: Array<String>): Boolean {
+        if (args.size - 1 != layer + 1)
+            return false
+
+        val worldName = args[layer]
+        val markName = args[layer + 1]
+
+        val basePairs = arrayOf<StringPair?>(StringPair.markName(markName), StringPair.worldName(worldName), StringPair.senderName(commandSender.name))
+
+        if (!rootPlugin.config.getBoolean("offline-players-tracker.enabled") || rootPlugin.config.getBoolean("offline-players-tracker.record-only")) {
+            commandSender.sendMessage(rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("tracker-not-enabled"), basePairs))
+            return true
+        }
+
+        val world = Bukkit.getWorld(args[layer])
+        if (world == null) {
+            commandSender.sendMessage(rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("no-such-world"), basePairs))
+            return true
+        }
+
+        val location = rootPlugin.marksManager!!.getMark(markName)
+        if (location == null) {
+            commandSender.sendMessage(rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("no-such-mark"), basePairs))
+            return true
+        }
+
+        val dir = File(
+                rootPlugin.dataFolder.absolutePath, "playersData")
+        dir.mkdirs()
+
+        var count = 0
+        for (file in dir.listFiles()!!) {
+            val configuration = YamlConfiguration.loadConfiguration(file)
+            if (configuration.getLocation("position")!!.world == world) {
+                configuration.set("position", location)
+                try {
+                    configuration.save(file)
+                    count++
+                } catch (ex: IOException) {
+                    ex.printStackTrace()
+                }
+
+            }
+        }
+        val cPairs = arrayOf<StringPair?>(StringPair.teleportedCount(count.toString()), StringPair.markName(markName), StringPair.worldName(worldName), StringPair.senderName(commandSender.name))
+        commandSender.sendMessage(rootPlugin.messagesManager!!.getMessage(
+                messageKey.append("completed"), cPairs))
+        return true
+    }
+
+    companion object {
+        protected val layerName = "offline"
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OnlineExecutor.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OnlineExecutor.java
deleted file mode 100644
index 3229307..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OnlineExecutor.java
+++ /dev/null
@@ -1,108 +0,0 @@
-package top.nololiyt.worldpermissions.commands.tp;
-
-import org.bukkit.Bukkit;
-import org.bukkit.Location;
-import org.bukkit.World;
-import org.bukkit.command.CommandSender;
-import org.bukkit.configuration.file.YamlConfiguration;
-import org.bukkit.entity.Player;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.commands.Executor;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.List;
-
-public class OnlineExecutor extends Executor
-{
-    protected final static String layerName = "online";
-    
-    @Override
-    protected String permissionName()
-    {
-        return null;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected boolean run(int layer, RootPlugin rootPlugin, DotDividedStringBuilder permission,
-                          DotDividedStringBuilder messageKey, CommandSender commandSender,
-                          String[] args)
-    {
-        if (args.length - 1 != layer + 1)
-            return false;
-    
-        String worldName = args[layer];
-        String markName = args[layer + 1];
-        
-        StringPair[] basePairs = new StringPair[]{
-                StringPair.markName(markName),
-                StringPair.worldName(worldName),
-                StringPair.senderName(commandSender.getName())
-        };
-        
-        World world = Bukkit.getWorld(args[layer]);
-        if (world == null)
-        {
-            commandSender.sendMessage(rootPlugin.getMessagesManager().getMessage(
-                    messageKey.append("no-such-world"), basePairs));
-            return true;
-        }
-    
-        Location location = rootPlugin.getMarksManager().getMark(markName);
-        if (location == null)
-        {
-            commandSender.sendMessage(rootPlugin.getMessagesManager().getMessage(
-                    messageKey.append("no-such-mark"), basePairs));
-            return true;
-        }
-    
-        List<Player> players = world.getPlayers();
-    
-        StringPair[] playersPairs = new StringPair[]{
-                null,
-                StringPair.markName(markName),
-                StringPair.worldName(worldName),
-                StringPair.senderName(commandSender.getName())
-        };
-        
-        int sCount = 0,fCount = 0;
-        for (Player player : players)
-        {
-            playersPairs[0] = StringPair.playerName(player.getDisplayName());
-        
-            player.sendMessage(rootPlugin.getMessagesManager().getMessage(
-                    new DotDividedStringBuilder(
-                            "messages.to-players.when-teleported-by-tp-online.before-teleport"),
-                    playersPairs));
-            if (!player.teleport(location))
-            {
-                fCount++;
-                commandSender.sendMessage(rootPlugin.getMessagesManager().getMessage(
-                        messageKey.append("failed-to-teleport-someone"), playersPairs));
-            }
-            else
-            {
-                sCount++;
-            }
-        }
-    
-        StringPair[] cPairs = new StringPair[]{
-                StringPair.teleportedCount(String.valueOf(sCount)),
-                StringPair.unteleportedCount(String.valueOf(fCount)),
-                StringPair.markName(markName),
-                StringPair.worldName(worldName),
-                StringPair.senderName(commandSender.getName())
-        };
-        commandSender.sendMessage(rootPlugin.getMessagesManager().getMessage(
-                messageKey.append("completed"), cPairs));
-        return true;
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OnlineExecutor.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OnlineExecutor.kt
new file mode 100644
index 0000000..5ee3c91
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/OnlineExecutor.kt
@@ -0,0 +1,83 @@
+package top.nololiyt.worldpermissions.commands.tp
+
+import org.bukkit.Bukkit
+import org.bukkit.Location
+import org.bukkit.World
+import org.bukkit.command.CommandSender
+import org.bukkit.configuration.file.YamlConfiguration
+import org.bukkit.entity.Player
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.commands.Executor
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+
+import java.io.File
+import java.io.IOException
+
+class OnlineExecutor : Executor() {
+
+    override fun permissionName(): String? {
+        return null
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    override fun run(layer: Int, rootPlugin: RootPlugin, permission: DotDividedStringBuilder,
+                     messageKey: DotDividedStringBuilder, commandSender: CommandSender,
+                     args: Array<String>): Boolean {
+        if (args.size - 1 != layer + 1)
+            return false
+
+        val worldName = args[layer]
+        val markName = args[layer + 1]
+
+        val basePairs = arrayOf<StringPair?>(StringPair.markName(markName), StringPair.worldName(worldName), StringPair.senderName(commandSender.name))
+
+        val world = Bukkit.getWorld(args[layer])
+        if (world == null) {
+            commandSender.sendMessage(rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("no-such-world"), basePairs))
+            return true
+        }
+
+        val location = rootPlugin.marksManager!!.getMark(markName)
+        if (location == null) {
+            commandSender.sendMessage(rootPlugin.messagesManager!!.getMessage(
+                    messageKey.append("no-such-mark"), basePairs))
+            return true
+        }
+
+        val players = world.players
+
+        val playersPairs = arrayOf(null, StringPair.markName(markName), StringPair.worldName(worldName), StringPair.senderName(commandSender.name))
+
+        var sCount = 0
+        var fCount = 0
+        for (player in players) {
+            playersPairs[0] = StringPair.playerName(player.displayName)
+
+            player.sendMessage(rootPlugin.messagesManager!!.getMessage(
+                    DotDividedStringBuilder(
+                            "messages.to-players.when-teleported-by-tp-online.before-teleport"),
+                    playersPairs))
+            if (!player.teleport(location)) {
+                fCount++
+                commandSender.sendMessage(rootPlugin.messagesManager!!.getMessage(
+                        messageKey.append("failed-to-teleport-someone"), playersPairs))
+            } else {
+                sCount++
+            }
+        }
+
+        val cPairs = arrayOf<StringPair?>(StringPair.teleportedCount(sCount.toString()), StringPair.unteleportedCount(fCount.toString()), StringPair.markName(markName), StringPair.worldName(worldName), StringPair.senderName(commandSender.name))
+        commandSender.sendMessage(rootPlugin.messagesManager!!.getMessage(
+                messageKey.append("completed"), cPairs))
+        return true
+    }
+
+    companion object {
+        protected val layerName = "online"
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/TpRouter.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/TpRouter.java
deleted file mode 100644
index de342ea..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/TpRouter.java
+++ /dev/null
@@ -1,41 +0,0 @@
-package top.nololiyt.worldpermissions.commands.tp;
-
-import top.nololiyt.worldpermissions.commands.CommandLayer;
-import top.nololiyt.worldpermissions.commands.Router;
-
-public class TpRouter extends Router
-{
-    protected final static String layerName = "tp";
-    @Override
-    protected String permissionName()
-    {
-        return layerName;
-    }
-    
-    @Override
-    protected String messageKey()
-    {
-        return layerName;
-    }
-    
-    /**
-     * Return the next layer matching the arg.
-     * If no layer match it, please return 'null' and the help list will be sent.
-     *
-     * @param arg
-     * @return
-     */
-    @Override
-    protected CommandLayer nextLayer(String arg)
-    {
-        switch (arg)
-        {
-            case "offline":
-                return new OfflineExecutor();
-            case "online":
-                return new OnlineExecutor();
-            default:
-                return null;
-        }
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/TpRouter.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/TpRouter.kt
new file mode 100644
index 0000000..8940ad3
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/commands/tp/TpRouter.kt
@@ -0,0 +1,33 @@
+package top.nololiyt.worldpermissions.commands.tp
+
+import top.nololiyt.worldpermissions.commands.CommandLayer
+import top.nololiyt.worldpermissions.commands.Router
+
+class TpRouter : Router() {
+    override fun permissionName(): String? {
+        return layerName
+    }
+
+    override fun messageKey(): String? {
+        return layerName
+    }
+
+    /**
+     * Return the next layer matching the arg.
+     * If no layer match it, please return 'null' and the help list will be sent.
+     *
+     * @param arg
+     * @return
+     */
+    override fun nextLayer(arg: String): CommandLayer? {
+        when (arg) {
+            "offline" -> return OfflineExecutor()
+            "online" -> return OnlineExecutor()
+            else -> return null
+        }
+    }
+
+    companion object {
+        protected val layerName = "tp"
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/DotDividedStringBuilder.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/DotDividedStringBuilder.java
deleted file mode 100644
index 0ff5593..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/DotDividedStringBuilder.java
+++ /dev/null
@@ -1,31 +0,0 @@
-package top.nololiyt.worldpermissions.entities;
-
-public class DotDividedStringBuilder
-{
-    private StringBuilder stringBuilder;
-    
-    @Override
-    public String toString()
-    {
-        return stringBuilder.toString();
-    }
-    
-    public DotDividedStringBuilder append(String name)
-    {
-        this.stringBuilder.append('.')
-                .append(name);
-        return this;
-    }
-    
-    public DotDividedStringBuilder(String root)
-    {
-        this.stringBuilder = new StringBuilder();
-        this.stringBuilder.append(root);
-    }
-    
-    public DotDividedStringBuilder(DotDividedStringBuilder builder)
-    {
-        this.stringBuilder = new StringBuilder();
-        this.stringBuilder.append(builder.stringBuilder.toString());
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/DotDividedStringBuilder.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/DotDividedStringBuilder.kt
new file mode 100644
index 0000000..f15ac6f
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/DotDividedStringBuilder.kt
@@ -0,0 +1,25 @@
+package top.nololiyt.worldpermissions.entities
+
+class DotDividedStringBuilder {
+    private var stringBuilder: StringBuilder? = null
+
+    override fun toString(): String {
+        return stringBuilder!!.toString()
+    }
+
+    fun append(name: String): DotDividedStringBuilder {
+        this.stringBuilder!!.append('.')
+                .append(name)
+        return this
+    }
+
+    constructor(root: String) {
+        this.stringBuilder = StringBuilder()
+        this.stringBuilder!!.append(root)
+    }
+
+    constructor(builder: DotDividedStringBuilder) {
+        this.stringBuilder = StringBuilder()
+        this.stringBuilder!!.append(builder.stringBuilder!!.toString())
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/StringPair.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/StringPair.java
deleted file mode 100644
index d4f2c4f..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/StringPair.java
+++ /dev/null
@@ -1,54 +0,0 @@
-package top.nololiyt.worldpermissions.entities;
-
-public class StringPair
-{
-    private String key;
-    
-    public String getKey()
-    {
-        return key;
-    }
-    
-    private String value;
-    
-    public String getValue()
-    {
-        return value;
-    }
-    
-    private StringPair(String key, String value)
-    {
-        this.key = key;
-        this.value = value;
-    }
-    
-    public static StringPair senderName(String value)
-    {
-        return new StringPair("{senderName}", value);
-    }
-    
-    public static StringPair playerName(String value)
-    {
-        return new StringPair("{playerName}", value);
-    }
-    
-    public static StringPair worldName(String value)
-    {
-        return new StringPair("{worldName}", value);
-    }
-    
-    public static StringPair teleportedCount(String value)
-    {
-        return new StringPair("{teleportedCount}", value);
-    }
-    
-    public static StringPair unteleportedCount(String value)
-    {
-        return new StringPair("{unteleportedCount}", value);
-    }
-    
-    public static StringPair markName(String value)
-    {
-        return new StringPair("{markName}", value);
-    }
-}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/StringPair.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/StringPair.kt
new file mode 100644
index 0000000..ae45e03
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/entities/StringPair.kt
@@ -0,0 +1,30 @@
+package top.nololiyt.worldpermissions.entities
+
+class StringPair private constructor(val key: String, val value: String) {
+    companion object {
+
+        fun senderName(value: String): StringPair {
+            return StringPair("{senderName}", value)
+        }
+
+        fun playerName(value: String): StringPair {
+            return StringPair("{playerName}", value)
+        }
+
+        fun worldName(value: String): StringPair {
+            return StringPair("{worldName}", value)
+        }
+
+        fun teleportedCount(value: String): StringPair {
+            return StringPair("{teleportedCount}", value)
+        }
+
+        fun unteleportedCount(value: String): StringPair {
+            return StringPair("{unteleportedCount}", value)
+        }
+
+        fun markName(value: String): StringPair {
+            return StringPair("{markName}", value)
+        }
+    }
+}
\ No newline at end of file
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/LoginAndQuitListener.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/LoginAndQuitListener.java
deleted file mode 100644
index 0bc75d4..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/LoginAndQuitListener.java
+++ /dev/null
@@ -1,79 +0,0 @@
-package top.nololiyt.worldpermissions.playerlisteners;
-
-import org.bukkit.Location;
-import org.bukkit.World;
-import org.bukkit.configuration.file.YamlConfiguration;
-import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerJoinEvent;
-import org.bukkit.event.player.PlayerQuitEvent;
-import org.bukkit.event.player.PlayerTeleportEvent;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.List;
-
-public class LoginAndQuitListener implements Listener
-{
-    private RootPlugin rootPlugin;
-    
-    public LoginAndQuitListener(RootPlugin rootPlugin)
-    {
-        this.rootPlugin = rootPlugin;
-    }
-    
-    @EventHandler
-    public void onPlayerLogin(PlayerJoinEvent e)
-    {
-        if ((!rootPlugin.getConfig().getBoolean("offline-players-tracker.enabled")) ||
-                rootPlugin.getConfig().getBoolean("offline-players-tracker.record-only"))
-        {
-            return;
-        }
-        
-        Player player = e.getPlayer();
-        File file = new File(
-                rootPlugin.getDataFolder().getAbsolutePath(), "playersData");
-        file.mkdirs();
-        file = new File(file.getAbsolutePath(), player.getUniqueId().toString() + ".yml");
-        if (!file.exists())
-            return;
-    
-        YamlConfiguration yamlConfiguration = YamlConfiguration
-                .loadConfiguration(file);
-        Object location = yamlConfiguration.get("position");
-        if (location != null)
-            player.teleport((Location) location);
-    }
-    @EventHandler
-    public void onPlayerQuitEvent(PlayerQuitEvent e)
-    {
-        if(!rootPlugin.getConfig().getBoolean("offline-players-tracker.enabled"))
-        {
-            return;
-        }
-        Player player = e.getPlayer();
-        try
-        {
-            File file = new File(
-                    rootPlugin.getDataFolder().getAbsolutePath(), "playersData");
-            file.mkdirs();
-            file = new File(file.getAbsolutePath(), player.getUniqueId().toString() + ".yml");
-            if (!file.exists())
-                file.createNewFile();
-    
-            YamlConfiguration yamlConfiguration = YamlConfiguration
-                    .loadConfiguration(file);
-            yamlConfiguration.set("position", player.getLocation());
-            yamlConfiguration.save(file);
-        }
-        catch (IOException ex)
-        {
-            ex.printStackTrace();
-        }
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/LoginAndQuitListener.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/LoginAndQuitListener.kt
new file mode 100644
index 0000000..e775b22
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/LoginAndQuitListener.kt
@@ -0,0 +1,65 @@
+package top.nololiyt.worldpermissions.playerlisteners
+
+import org.bukkit.Location
+import org.bukkit.World
+import org.bukkit.configuration.file.YamlConfiguration
+import org.bukkit.entity.Player
+import org.bukkit.event.EventHandler
+import org.bukkit.event.Listener
+import org.bukkit.event.player.PlayerJoinEvent
+import org.bukkit.event.player.PlayerQuitEvent
+import org.bukkit.event.player.PlayerTeleportEvent
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+
+import java.io.File
+import java.io.IOException
+
+class LoginAndQuitListener(private val rootPlugin: RootPlugin) : Listener {
+
+    @EventHandler
+    fun onPlayerLogin(e: PlayerJoinEvent) {
+        if (!rootPlugin.config.getBoolean("offline-players-tracker.enabled") || rootPlugin.config.getBoolean("offline-players-tracker.record-only")) {
+            return
+        }
+
+        val player = e.player
+        var file = File(
+                rootPlugin.dataFolder.absolutePath, "playersData")
+        file.mkdirs()
+        file = File(file.absolutePath, player.uniqueId.toString() + ".yml")
+        if (!file.exists())
+            return
+
+        val yamlConfiguration = YamlConfiguration
+                .loadConfiguration(file)
+        val location = yamlConfiguration.get("position")
+        if (location != null)
+            player.teleport((location as Location?)!!)
+    }
+
+    @EventHandler
+    fun onPlayerQuitEvent(e: PlayerQuitEvent) {
+        if (!rootPlugin.config.getBoolean("offline-players-tracker.enabled")) {
+            return
+        }
+        val player = e.player
+        try {
+            var file = File(
+                    rootPlugin.dataFolder.absolutePath, "playersData")
+            file.mkdirs()
+            file = File(file.absolutePath, player.uniqueId.toString() + ".yml")
+            if (!file.exists())
+                file.createNewFile()
+
+            val yamlConfiguration = YamlConfiguration
+                    .loadConfiguration(file)
+            yamlConfiguration.set("position", player.location)
+            yamlConfiguration.save(file)
+        } catch (ex: IOException) {
+            ex.printStackTrace()
+        }
+
+    }
+}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/TeleportListener.java b/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/TeleportListener.java
deleted file mode 100644
index 8d74ac8..0000000
--- a/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/TeleportListener.java
+++ /dev/null
@@ -1,71 +0,0 @@
-package top.nololiyt.worldpermissions.playerlisteners;
-
-import org.bukkit.World;
-import org.bukkit.entity.Player;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerTeleportEvent;
-import top.nololiyt.worldpermissions.RootPlugin;
-import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder;
-import top.nololiyt.worldpermissions.entities.StringPair;
-
-import java.util.List;
-
-public class TeleportListener implements Listener
-{
-    private RootPlugin rootPlugin;
-    
-    public TeleportListener(RootPlugin rootPlugin)
-    {
-        this.rootPlugin = rootPlugin;
-    }
-    
-    @EventHandler
-    public void onPlayerTeleport(PlayerTeleportEvent e)
-    {
-        World dest = e.getTo().getWorld();
-        if (dest.equals(e.getFrom().getWorld()))
-        {
-            return;
-        }
-        
-        String destName = dest.getName();
-        
-        Player player = e.getPlayer();
-        
-        if (!worldIsControlled(dest))
-        {
-            return;
-        }
-        
-        StringPair[] pairs = new StringPair[]{
-                StringPair.playerName(player.getDisplayName())
-        };
-        
-        if (player.hasPermission("nworldpermissions.forfreeto." + destName))
-        {
-            String message = rootPlugin.getMessagesManager().getMessage(
-                    new DotDividedStringBuilder(
-                            "messages.to-players.when-teleport-to-controlled-worlds.teleported"),
-                    pairs);
-            if (!message.isEmpty())
-                player.sendMessage(message);
-            return;
-        }
-        
-        e.setCancelled(true);
-        String message = rootPlugin.getMessagesManager().getMessage(
-                new DotDividedStringBuilder(
-                        "messages.to-players.when-teleport-to-controlled-worlds.denied"
-                ), pairs);
-        if (!message.isEmpty())
-            player.sendMessage(message);
-    }
-    
-    private boolean worldIsControlled(World world)
-    {
-        List<String> worlds = rootPlugin.getConfig().getStringList("controlled-worlds");
-        String destName = world.getName();
-        return worlds.contains(destName);
-    }
-}
diff --git a/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/TeleportListener.kt b/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/TeleportListener.kt
new file mode 100644
index 0000000..565e24a
--- /dev/null
+++ b/NWorldPermissions/src/top/nololiyt/worldpermissions/playerlisteners/TeleportListener.kt
@@ -0,0 +1,55 @@
+package top.nololiyt.worldpermissions.playerlisteners
+
+import org.bukkit.World
+import org.bukkit.entity.Player
+import org.bukkit.event.EventHandler
+import org.bukkit.event.Listener
+import org.bukkit.event.player.PlayerTeleportEvent
+import top.nololiyt.worldpermissions.RootPlugin
+import top.nololiyt.worldpermissions.entities.DotDividedStringBuilder
+import top.nololiyt.worldpermissions.entities.StringPair
+
+class TeleportListener(private val rootPlugin: RootPlugin) : Listener {
+
+    @EventHandler
+    fun onPlayerTeleport(e: PlayerTeleportEvent) {
+        val dest = e.to!!.world
+        if (dest == e.from.world) {
+            return
+        }
+
+        val destName = dest!!.name
+
+        val player = e.player
+
+        if (!worldIsControlled(dest)) {
+            return
+        }
+
+        val pairs = arrayOf<StringPair?>(StringPair.playerName(player.displayName))
+
+        if (player.hasPermission("nworldpermissions.forfreeto.$destName")) {
+            val message = rootPlugin.messagesManager!!.getMessage(
+                    DotDividedStringBuilder(
+                            "messages.to-players.when-teleport-to-controlled-worlds.teleported"),
+                    pairs)
+            if (!message.isBlank())
+                player.sendMessage(message)
+            return
+        }
+
+        e.isCancelled = true
+        val message = rootPlugin.messagesManager!!.getMessage(
+                DotDividedStringBuilder(
+                        "messages.to-players.when-teleport-to-controlled-worlds.denied"
+                ), pairs)
+        if (!message.isBlank())
+            player.sendMessage(message)
+    }
+
+    private fun worldIsControlled(world: World): Boolean {
+        val worlds = rootPlugin.config.getStringList("controlled-worlds")
+        val destName = world.name
+        return worlds.contains(destName)
+    }
+}