As you may have read, reported with varying cadences of hysteria, Java 9 stands to bring a series of changes to the platform. These potentially breaking changes will focus around Java tooling and internal APIs, and whilst there is largely no need for alarm, itâ€™s a good idea to get to know and prepare for the adjustments youâ€™ll be needing to make before it officially goes GA. n this spirit of forward planning, Oracle have just released a sneak peek of JShell and Read-Eval-Print Loop (REPL) coming in Java 9. With REPL, tipped by Java Language Architect Brian Goetz the real â€śsleeperâ€? feature of the next big release, you can evaluate code snippets such as declarations, statements, expressions. Developers can test your code as they write it rather than waiting until the end of the project.