Dowload IDE from https://www.jetbrains.com/idea/

Java 15 TOC - https://docs.oracle.com/javase/tutorial/java/TOC.html

Java 15 Tutorial - https://docs.oracle.com/javase/tutorial/index.html

Java 15 API - https://docs.oracle.com/en/java/javase/15/docs/api/java.base/module-summary.html

Java 15 Spec - https://docs.oracle.com/javase/specs/index.html

Java-15 https://openjdk.java.net/jeps/0

Its a Spring Boot Appliction.To demo Java 15 concepts...

Each package has Application.java which is standalone class to demo the topics.

Microservices

https://github.com/eventuate-tram/eventuate-tram-core

https://github.com/eventuate-tram/eventuate-tram-examples-java-spring-todo-list

https://github.com/eventuate-tram/eventuate-tram-core-examples-basic

https://github.com/eventuate-tram/eventuate-tram-core-examples-basic