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Java Online Compiler

Free Java online compiler and code editor. Write and execute Java code instantly with JDK 11+ support, real-time output, and code sharing. Perfect for learning Java programming.

Try Java Online

Tip: To share your Java code, you'll need to sign in. This keeps our platform secure and prevents abuse.

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Java Code Examples

Hello World

Basic Java program

Variables and Data Types

Working with variables and data types

Arrays and Methods

Using methods and arrays

Why Use Our Java Compiler?

Perfect for Learning

  • ✓ No installation or setup required
  • ✓ Instant feedback on your code
  • ✓ Practice Java anywhere, anytime
  • ✓ Save and share your code snippets (login required for sharing)

Professional Features

  • ✓ Syntax highlighting and auto-completion
  • ✓ Real-time error detection
  • ✓ Secure execution environment
  • ✓ Mobile-friendly interface

Getting Started with Java

  1. Write your code in the editor above with full syntax highlighting
  2. Click "Run" to execute your Java code instantly
  3. View the output in the console below the editor
  4. Try the examples above to learn Java concepts
  5. Share your work with others using the share button (login required)