Online URL Regex Java Validator Tool

URL Regex Java Validator

Professional-grade URL validation tool with comprehensive regex pattern analysis, real-time validation, and detailed explanations for Java developers.

URL Validator

Advanced Options

User Guide & Documentation

What is URL Regex?

URL Regex is a regular expression pattern used to validate and match Uniform Resource Locators (URLs). It ensures that a given string conforms to the standard URL format as defined by RFC 3986.

URL Regex Pattern

Our comprehensive URL regex pattern includes:

^(https?|ftp):// Protocol specification (HTTP, HTTPS, or FTP)
([a-zA-Z0-9.-]+) Domain name with subdomains
(:[\d]+)? Optional port number
(/[^?\s]*)? Optional path component
(\?[^#\s]*)? Optional query string
(#[^\s]*)?$ Optional fragment identifier

How It Works

The validator performs multi-step analysis:

  • Pattern Generation: Creates regex based on selected options
  • Syntax Validation: Checks against regex pattern
  • Component Analysis: Breaks down URL into parts
  • Scoring System: Calculates match confidence
  • Detailed Reporting: Provides comprehensive feedback

URL Examples

✓ Valid URLs:
https://example.com
http://sub.domain.org:8080/path
https://site.com/page?q=search&id=123
ftp://files.server.net/folder/
✗ Invalid URLs:
htp://invalid-protocol.com
https://[invalid-brackets]
http://.missing-domain.com
https://space in url.com

Tips for Java Implementation

  • Use Pattern.compile() to compile regex for better performance
  • Consider URL class for additional validation
  • Handle MalformedURLException for comprehensive error handling
  • Test with edge cases like international domain names
  • Use Matcher.find() vs Matcher.matches() appropriately
Feature Details
Price Free
Rendering Client-Side Rendering
Language JavaScript
Paywall No

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F9XR

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