Java Code Viewer

What is Java Code Viewer

Last reviewed: April 18, 2026

Java is a statically typed, object-oriented language used heavily in enterprise backends, Android development, and large-scale distributed systems.

Java Code Viewer is a quick-look tool for Java classes, interfaces, enums, and snippets. It re-indents your code with balanced braces and renders it with syntax highlighting, making quick reviews and pastes into issues or docs effortless.

It runs fully in the browser — nothing is uploaded — so you can safely inspect proprietary or unreleased source code.

Why use it

• Quickly review Java snippets before posting to Slack or a PR.
• Re-indent copy-pasted code from logs or emails.
• Share a readable version of a gist with non-Java teammates.
• Audit auto-generated Java output from codegen tools.
• Teach Java syntax with well-formatted examples.

Features

• Brace-aware re-indentation
• Syntax highlighting
• Java parsed locally in your browser
• Handles annotations & generics
• Fast copy-paste workflow

How to use Java Code Viewer

1. Paste Java. Drop any Java source into the viewer.
2. Click Run. Output is re-indented and highlighted.
3. Copy result. Paste into your doc, ticket, or review.

Example (before/after)

public class Hello{public static void main(String[] a){System.out.println("Hi");}}

public class Hello {
  public static void main(String[] a) {
    System.out.println("Hi");
  }
}

Common errors

FAQ

Related tools

Pair with Java Beautifier, escape/unescape, and regex tester. You can also browse the full Viewers category for more options.