CI with github actions

At the same time correct the supported java version to 8+.

.github/workflows/maven.yml

@@ -0,0 +1,29 @@
+# This workflow will build a Java project with Maven
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+
+name: Java CI with Maven
+
+on:  [push, pull_request]
+  #  push:
+  #    branches: [ master ]
+  #  pull_request:
+  #    branches: [ master ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [11, 17, 21, 22-ea]
+        dist: ['zulu']
+    name: Build and Verify with JDK ${{ matrix.dist }} ${{ matrix.java }}
+    steps:
+      - uses: ts-graphviz/setup-graphviz@v1
+      - uses: actions/checkout@v4
+      - name: Set up JDK ${{ matrix.dist }} ${{ matrix.java }}
+        uses: actions/setup-java@v4
+        with:
+          distribution: ${{ matrix.dist }}
+          java-version: ${{ matrix.java }}
+      - name: Verify with Maven
+        run: mvn -DperformRelease=true --batch-mode --no-transfer-progress clean verify failsafe:integration-test

pom.xml

@@ -37,9 +37,9 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>1.6</maven.compiler.source>
-    <maven.compiler.target>1.6</maven.compiler.target>
-    <maven.compiler.release>1.6</maven.compiler.release>
+    <maven.compiler.source>1.8</maven.compiler.source>
+    <maven.compiler.target>1.8</maven.compiler.target>
+    <maven.compiler.release>8</maven.compiler.release>
   </properties>
 
   <dependencies>