How to Use Java Playground
A browser-based learning environment where you can write and run Java code instantly.
Basic Usage
- Write your Java code.
- Press Run.
- Check the result in Output.
Features
- ⌘ + Enter / Ctrl + Enter: Run the code
- Examples: Load Java sample programs
- Reset: Restore the default Hello World program
- Auto Save: Your code is saved in this browser and restored on your next visit
- Line Numbers: Display only; they are not included when copying code
- Error Display: Relevant diagnostics are shown when available
Supported Usage
Use it to learn basic Java programming, including variables, conditions, loops, arrays, methods, and classes.
Runtime
Java code is compiled in your browser and executed as WebAssembly. This is not a complete JDK/JVM environment, so some Java features are not supported. Compilation and execution take place locally in your browser.
