Compiler

Write, run, and inspect Java programs.

Paste examples from lessons or the reference, run them in the browser, and inspect input and output side by side.

Edit and run Java

Use a complete `Main.java` file, add optional program input, then run it to inspect the output or compiler errors.

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Output

Run the program to see its output here.

Before you run

  • Java code must include a `public class Main` entry point.
  • Place input for `Scanner` in the program input field.
  • Programs run in a restricted sandbox without network access.