Java Formatter
What is Java Formatting?
Java formatting is the process of organizing messy Java code into a standardized, readable format. Good code formatting improves readability, makes debugging easier, and reduces errors. Formatting includes: consistent indentation, proper line breaks, operator spacing, and bracket alignment. Minification removes all whitespace and comments, significantly reducing file size.
How to Use
Basic Operations
- Paste or type Java code in the left input box
- Select indent size (2 spaces, 4 spaces, or Tab)
- Click 'Format' to beautify code, or 'Minify' to compress
- View results on the right (with syntax highlighting)
- Click 'Copy' to copy to clipboard
Options Description
FAQ
Will formatting change my code's execution result?
No. Formatting only adjusts code layout (spaces, line breaks, indentation) without changing any logic, variable names, or functionality. The execution result remains exactly the same.
Does it support Java 17+ syntax?
Yes. The tool supports all modern Java syntax including records, sealed classes, pattern matching, text blocks, and more.
Can minified code be restored?
Minification is irreversible. We recommend keeping the original code and using minified versions only for deployment. To restore, you can only reformat, but variable names cannot be recovered.
What if syntax validation finds errors?
The tool will indicate the approximate error location. Common errors include: mismatched brackets, missing semicolons, unclosed strings. Fix according to the prompt and check again.
Is my data safe?
Completely safe. All processing is done locally in the browser, and data is never uploaded to any server.