How to Use the Java Formatter
Using the Java Formatter is simple — just three steps:
- Paste Java Code
Paste your Java code into the input area. All processing runs locally in your browser. - Adjust Settings
Choose indentation size, brace style (same-line/next-line), import sorting, and other options. - Copy or Download
Click format, then copy the result to clipboard or download as a file. Completely free, no limits.
Formatting Options
About Java Formatting
Java code formatting follows the Google Java Style Guide and Sun coding conventions. This tool helps you auto-beautify Java code:
• Auto Indentation — Detect class, method, and control flow nesting levels
• Brace Style — K&R style (same-line {) or Allman style (next-line {)
• Operator Spacing — Add proper spaces around =, +, -, ==, etc.
• Blank Line Cleanup — Remove consecutive blank lines, keep reasonable spacing between methods
• Import Sorting — Sort import statements alphabetically
Note: This tool provides basic formatting without complex AST analysis. All computation happens on your device and your code never leaves your browser.
Frequently Asked Questions (FAQ)
Is the Java Formatter free to use?
Yes, the Java Formatter is completely free with no registration or login required.
Does the formatter upload my code to a server?
No. All processing happens in your browser. Your code never leaves your device.
What formatting options are available?
Indentation (2/4 spaces/Tab), brace style (same-line/next-line), operator spacing, blank line cleanup, trailing whitespace removal, and import sorting.
Will formatting change my code's functionality?
No. Formatting only adjusts whitespace and layout. The code remains functionally identical.
Which Java versions are supported?
The tool handles basic Java syntax structures (classes, methods, control flow) and works with Java 8 through the latest version.
Is my data secure?
Yes. All computation happens on your device. Operator spacing, blank line cleanup and other inputs stay in your browser. No data is sent to any server.