Sandbox for Java coding experiments

Prerequisites

• Maven 3
• JDK 21

Modules

• akka-project
  Example of app with Akka framework usage

• common

  • Digital signing of string/file/xml
  • Encryption example
  • Guice usage example
  • JMS connector to get queue size by JMX
  • MapStruct mapper example
  • Example of annotation-driven masker
  • Example of work with sockets
  • Example of testing classes using Mockito / JMock mocks

• custom-spring-boot-starter
  Example of custom Spring Boot Starter

• dagger-sample
  Example of Dagger usage

• db-versioning
  Example of DB versioning usage with help of

  • Liquibase
  • Flyway

• elasticsearch
  Example of Elasticsearch usage

• graphql-spring-boot-sample
  Example of GraphQL usage in Spring Boot application

• grpc-sample
  Example of gRPC service and its client

• hibernate-mappings
  Example of different cases of Hibernate mappings

• openapi-generator-sample
  Example of OpenApi generation:

  • Usual Java app
  • Spring Boot app

• messaging-stomp-websocket
  Example of STOMP messaging over WebSockets for building interactive web application

• sound-recorder-n-spectrum-analyzer

  • Application to record a microphone's sound and play after that
  • Application to analyze a spectrum of microphone's sound

• test-containers
  Example of Java Test containers usage with help of Docker

• two-factor-authentication
  Example of two-factor authentication application with usage of Google authenticator

• unit-tests-debugging
  Example of different cases of tests debugging

Build notes

To allow io.fabric8:docker-maven-plugin manipulate with Docker images need to add DOCKER_HOST=tcp://127.0.0.1:2375 to environment variables on Windows machine and switch on Docker option Expose daemon on tcp://localhost:2375 without TLS