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
• ObjectMapper usage example with serialization/deserialization object to/from string
• 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