Java Formatter

Format and beautify Java source code with structured indentation and cleaner layout

Best For

Clean up copied code, minified snippets, or messy indentation before code reviews and documentation.

Style Rule

Java Input

Formatted Output

Before & After Java Formatting

See the difference one click makes. The formatter parses your Java source and rebuilds it with consistent 2-space indentation, sane line breaks, and Google Java Style-inspired spacing — without changing a single token of logic.

Before: unformatted Java

public class OrderService{private final Map<String,Double> prices=new HashMap<>();public double checkout(List<String> items){double total=0;for(String item:items){Double price=prices.get(item);if(price==null){throw new IllegalArgumentException("Unknown item: "+item);}total+=price;}if(total>100){return total*0.9;}return total;}}

After: formatted with EZ Formatter

public class OrderService {

  private final Map<String, Double> prices = new HashMap<>();

  public double checkout(List<String> items) {
    double total = 0;
    for (String item : items) {
      Double price = prices.get(item);
      if (price == null) {
        throw new IllegalArgumentException("Unknown item: " + item);
      }
      total += price;
    }
    if (total > 100) {
      return total * 0.9;
    }
    return total;
  }
}

Professional Java Processing Features

Everything you need to work with Java data efficiently and professionally

Syntax Error Detection

Invalid Java is reported instantly with the error position, so a stray brace or missing semicolon never silently breaks your reformat.

Structured Code Layout

Rebuild classes, methods, and control-flow blocks with consistent 2-space indentation and brace-aware line splitting at 100 characters.

Consistent Team Style

Paste any team member's code and get the same layout — the deterministic Prettier engine removes style debates from code review.

Modern Java Support

Full support for records, sealed classes, switch expressions, text blocks, var, lambda expressions, and annotated generics.

Instant Processing

Format large Java files up to 10MB entirely in your browser with zero server round-trips and no data uploads.

Zero Setup

No IDE plugins, no Maven or Gradle config, no command line. Open the page, paste Java code, click once, and copy the result.

How It Works

Simple steps to process your Java like a pro

Paste Java Code

Paste your Java source code into the input area, or load the sample class to see the formatter in action.

Click Format

One click runs the Prettier engine with sensible Java defaults — no configuration needed.

Inspect the Result

Review the rebuilt code with clean indentation, line breaks, and spacing. Syntax errors, if any, are shown with their position.

Copy & Use

Copy the formatted Java to your clipboard and paste it straight back into your IDE or project.

Professional Java Formatter & Validator

Trusted by millions of developers worldwide for reliable Java processing

Built by Experts

Our Java formatter runs the same Prettier engine trusted in professional IDEs and CI pipelines, wrapped in a zero-setup web tool. It parses the full Java grammar — from generics and lambda expressions to records and sealed classes — and rebuilds your source with consistent, review-ready layout every time.

Key Technical Features:

• Built on Prettier and prettier-plugin-java, an open-source Java parser
• Syntax errors are reported with the exact position so you can fix them fast
• Understands modern Java: records, sealed classes, switch expressions, and text blocks
• Client-side WebAssembly-grade processing for maximum security and speed
• Handles files up to 10MB directly in your browser

Trusted & Secure

Used by developers who value privacy: because formatting happens entirely in your browser, proprietary Java code never leaves your machine. No uploads, no accounts, no traces.

Security & Privacy:

• 100% client-side processing - data never sent to servers
• No tracking, cookies or data collection
• HTTPS encryption for secure connections
• Open-source formatting engine you can inspect yourself
• GDPR and CCPA compliant approach

Why Professionals Choose EZ Formatter

99.9%

Uptime Reliability

<100ms

Average Processing Time

10M+

Java Files Processed Monthly

Join millions of developers who trust our Java formatter for their daily development workflow. No registration required, completely free, and built with privacy in mind.

Frequently Asked Questions

Common questions about Java Formatter formatting answered

Yes, our Java formatter is completely free with no registration required. All processing happens in your browser.

It uses Prettier with the prettier-plugin-java parser — the same open-source combination used in IDEs and build pipelines. That means deterministic output: the same input always produces the same formatted code.

Yes. The formatter supports modern Java syntax including records, sealed classes, pattern matching, switch expressions, and text blocks introduced in recent Java versions.

Its defaults align closely with Google Java Style: 2-space indentation and a 100-character line width. Note that it is Prettier-based rather than a google-java-format port, so a few edge cases like import ordering may differ.

Never. The formatter engine is downloaded to your browser once and all parsing and formatting run locally on your machine. Your code is not sent, stored, or logged anywhere.