#140 · Programming Languages Developer Tool

Java Converter

Convert Java line endings, indentation, brace styles, identifiers, primitive wrappers, and selected modern-language patterns. Safe transforms are applied directly, while structural rewrites such as POJO-to-record are clearly marked for manual review.

Developer Input

Source code

Java Converter Input

public class User {
    private final String name;
    public User(String name) { this.name = name; }
    public String getName() { return name; }
}

Conversion Mode

Target Java Version

version

Trim trailing whitespace Preserve comments Preview risky conversions Show compatibility notes Skip complex structures Auto-run while typing

How to use this developer tool

Paste Java source.
Select a conversion mode.
Enter the target Java version.
Run the converter.
Review safety and compatibility notes before using the result.

What this developer tool does

It distinguishes safe text transformations from structural rewrites. Version-dependent results include a minimum-version note and a lower confidence score.

Protect literals and comments → detect selected pattern → transform safe regions → compare changes → evaluate target version → output review guidance.

Structural conversions are previews, not guaranteed refactors. Compile, test, and manually inspect the result.

Example

Input

public class User { private final String name; }

Preview

public record User(String name) {}

Tips for better output

Use safe line-ending and indentation conversions for bulk cleanup.
Treat POJO-to-record as a starting point only.
Check the target Java version before applying modern syntax.

FAQ

How do I convert a Java POJO to a record?

Choose POJO to Record Preview and manually verify constructors, methods, inheritance, and validation.

How can I convert Java anonymous classes to lambdas?

This converter does not automatically rewrite arbitrary anonymous classes because semantic validation is required.

How do I convert Java switch statements to switch expressions?

Use a compiler-aware refactoring tool for complex switches; this browser converter focuses on safer transformations.

How can I change Java code from CRLF to LF?

Choose Line Endings to LF and run the converter.

Which Java version is required for records and text blocks?

Records require Java 16 or later, and text blocks are standard from Java 15.

Related developer tools

TypeScript Checker TypeScript Generator TypeScript Formatter TypeScript Converter

Conversion safety

Safe	Whitespace and line endings
Review	Identifiers and wrappers
Potentially breaking	POJO-to-record
Compatibility	Target Java version checked

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