JRegExAnalyser
jRegExAnalyser is a Java application for testing, analyzing and visualizing regular expressions. It allows you to enter sample text and regex patterns to understand how they match, highlight matched groups, analyze regex complexity, and generate railroad diagrams.
jRegExAnalyser: Java Application for Regex Testing & Analysis
jRegExAnalyser is a Java application for testing, analyzing and visualizing regular expressions. It allows you to enter sample text and regex patterns to understand how they match, highlight matched groups, analyze regex complexity, and generate railroad diagrams.
What is JRegExAnalyser?
jRegExAnalyser is an open-source Java application designed specifically for working with regular expressions. It provides a feature-rich graphical interface that allows you to visually test, analyze and debug regex patterns.
Some of the key features of jRegExAnalyser include:
- Live testing of regex patterns against sample text inputs
- Color coding and highlighting of matched regex groups
- Listing of capture groups with details on index, value matched, etc.
- Analysis of pattern complexity including quantifier counts, nesting levels, steps required, etc.
- Generation of railroad syntax diagrams corresponding to the regex pattern
- Saving regex patterns to an integrated library for later reuse
- Support for Java regex syntax with all operators, anchors, quantifiers, etc.
- Integrated regex references and guides for Java regex features
If you work heavily with regular expressions in Java, jRegExAnalyser can be an invaluable tool for debugging, visualization, analysis and learning. With its intuitive visual interface, it makes working with complex regexes faster and easier.
JRegExAnalyser Features
Features
- Visualize regular expressions as railroad diagrams
- Test regular expressions against sample text
- Highlight matched groups in test text
- Analyze regex complexity
- Support for Java regex syntax
Pricing
- Open Source
Pros
Helpful visualizations for understanding regex
Useful testing and analysis features
Free and open source
Cons
Only supports Java regex syntax
Limited to testing individual regex patterns
User interface is a bit dated
Official Links
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