Java9 and REPL Forget debugging, welcome joy and productivity

on YouTube ↗31m

" summary

Demonstrates the Java 9 jshell REPL used as an interactive debugger and playground: starts a tiny HTTP server with Spark Java, wires endpoints, imports Gson to return JSON, edits and re-evaluates snippets live, and drives the running app via shell commands. Shows Maven integration that launches jshell with the full project classpath so compiled classes and dependencies are immediately available, and explores Spring 5 by registering beans at runtime. Everything runs end-to-end and visibly works.

AI-written summary · about

" chapters (10)

1. 0:00Java 9 and JShell intro
2. 1:50What is JShell
3. 3:14Starting JShell basics
4. 6:00Java 9 APIs with JShell
5. 11:52Web app with JShell
6. 16:30Run Java files in JShell
7. 22:18JShell with Maven
8. 23:21Spring 5 with JShell
9. 29:32Advanced JShell tools
10. 30:17Q&A

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