JShell: An Interactive Shell for the Java Platform
summary
JShell is an interactive Java REPL shipping part of JDK 9 that evaluates real Java snippets (no new syntax) by compiling on the fly uses compiler API and running bytecode on the JVM. It creates temporary variables, shows typed results, supports tab completion, history, editable startup snippets, /commands like /list /save /classpath, and persistent session files. Package declarations are disallowed; imports are auto and editable. Execution context isolates runaway code (Ctrl‑C) and remote attach is possible in principle but not provided out of the box.
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chapters (9)
- 0:00Start
- 0:59What Is Jay Shell
- 6:35Explore in Java without Jay Shell
- 9:44Using J Shell
- 11:15Clear a Method
- 18:44Command Line Editing a History
- 21:10Tab Completion
- 28:23Classpath Command
- 36:47Is It Possible To Connect to Remote Server on Which Our Application Is Deployed
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