Java Viewerv1.0.0

Paste any Java source code into the input field and receive a formatted, syntax-highlighted view with line numbers and code statistics. All processing runs directly in the browser with no server communication, keeping your code private and the response instant.

• Paste or type Java source code into the Java Source Code textarea. The viewer accepts complete classes, interfaces, enums, records, method fragments, or standalone expressions.
• Click the View button or wait for the automatic formatting that triggers after a brief typing pause. The formatted output appears in the Formatted Output panel with syntax highlighting applied.
• Review the Code Statistics panel for an immediate breakdown. Total Lines shows every line including blank ones, Total Characters counts every character in the input, Non-Empty Lines excludes whitespace-only lines, and Comment Lines counts lines that are part of single-line or multi-line comments.
• Open Settings to adjust the display. Change the Tab Size dropdown to convert tab characters to 2, 4, or 8 spaces in the output. Toggle Show line numbers to prefix each line with its number for quick reference during code reviews or pair programming sessions. Enable Word wrap to break long lines within the output panel instead of requiring horizontal scrolling.
• Toggle Highlight syntax on or off. When enabled, the viewer identifies and marks Java keywords (public, class, if, return, and others), primitive and common types (int, String, boolean), string and character literals, single-line comments starting with two forward slashes, multi-line comments enclosed in forward-slash-asterisk pairs, Javadoc comments, annotations prefixed with the at symbol, and numeric literals including integers, floating-point numbers, long suffixes, and hexadecimal values.
• Click Copy Output to copy the plain-text formatted code (without highlighting markup) to the clipboard. A confirmation notification appears and auto-dismisses after four seconds.
• Click Reset to clear all input, output, and saved state, returning every setting to its default value.
• All input text and settings persist automatically in browser local storage. Returning to the page restores your previous session exactly as you left it.

Viewing and analyzing Java source code arises in many contexts beyond a full IDE. A lightweight browser-based viewer fills the gap when installing or launching a desktop editor is not practical or not possible.

• Code Reviews: Paste a pull request diff or a method snippet to read it with line numbers and keyword highlighting. Reviewers can reference specific line numbers in their feedback without needing the full repository checked out.
• Education: Students and instructors paste example code to examine structure, count comment density, and identify how many lines a class spans. The statistics panel provides a quick complexity estimate for classroom exercises and homework submissions.
• Technical Interviews: Interviewers paste candidate solutions into the viewer to walk through logic with line numbers visible. The syntax highlighting makes control flow and method boundaries easier to follow on a shared screen.
• Documentation: Technical writers paste code samples before embedding them in wikis or knowledge bases. The formatted output confirms indentation and line count match the documented expectations.
• Debugging: Paste a stack trace's referenced method or class to inspect it with highlighting. Comment-line counts help gauge how well-documented a section of code is before modifying it.
• Mobile Browsing: Read Java source files on a phone or tablet where no IDE is available. The word-wrap setting adapts long lines to narrow screens, and line numbers keep orientation clear while scrolling.
• Clipboard Pipelines: Copy formatted plain text from the viewer into emails, chat messages, or issue trackers where preserving indentation and line numbers adds clarity to bug reports or feature requests.
• Quick Statistics: Paste an entire Java file to see total lines, non-empty lines, and comment lines at a glance. Compare those numbers across files to spot under-documented or overly large classes without running a full static-analysis tool.