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Java Formatter

Online Java formatter with beautify, indentation cleanup, sample loading, and quick copy

Paste Java code here
Processed output appears here

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Output size

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Documentation

Tool Overview

This tool formats Java code with Prettier and prettier-plugin-java to clean indentation, line breaks, and brace layout for Spring Boot work, code review, interview snippets, and pre-commit cleanup.

Key Features

  • Prettier Java engine: built on Prettier and prettier-plugin-java for Java files, class members, method snippets, and common statement blocks.
  • Uses the Prettier Java plugin for more stable formatting output.
  • Supports tabs, 2-space indentation, or 4-space indentation.
  • Includes sample loading, result copy, and dual-panel code editing.
  • Works with full Java files and also handles common members, method bodies, and snippets such as switch and if blocks.
  • All processing stays in the browser without uploading code.

Steps

  1. Paste Java code into the left panel.
  2. Choose the indent style you want.
  3. Click process to generate formatted output.
  4. Copy the result for your project, docs, or review flow.

Use Cases

  • Standardize Java code before commits.
  • Improve class and method readability before review.
  • Clean snippets for docs, blogs, interview answers, and demo responses.

Notes

  • The tool never executes Java code and only formats text.
  • If the source has syntax issues or the snippet is incomplete, review the output before applying it in a project.