Java Practice Lab

Online Java Compiler: Run Java 17 Code

Write and run Java code without installing a JDK. The interactive compiler supports standard input, editable templates, local draft saving, and clear output.

Java compiler examples

How to run Java online

  1. Enter code in the editor.
  2. Add standard input when your program uses Scanner.
  3. Select Run Code and review compiler output.

Open 59 Java examples with output · Practice Java exercises