Code. Bug. Fix. Iterate.


Java Regex Tester

Your regular expression to test

Your test string

Java regular expression

Javex is a Java regex tester! Javex strives to have a user-friendly interface to make testing your regular expressions more enjoyable, as unfortunately regex isn't the simplest or friendliest thing in development!

You can verify that your regex patterns are valid, thus eliminating syntax errors that sometimes cost us quite a bit of time…

But that's not all – it allows you to test your regular expressions against strings, so you can see exactly how they match and identify any potential issues.

Javex also provides a graphical representation of your pattern. This offers a clear understanding of how your pattern works, which can greatly facilitate comprehension at times.

And if you need to share your regex pattern, our tool allows you to export it as a JPG image. This functionality can be handy for sharing your regex on forums (Let's see if ChatGPT hasn't wiped them all out…).

Why test Java regex?

With regex, there's no choice; you have to test to make sure it works as expected. Otherwise, it could lead to some serious trouble…

You might want to ensure that your regular expressions work correctly in Java by checking their syntax and confirming their matches with strings. Moreover, this testing tool allows you to visualize and export your regex, making it easier to understand and effectively share your patterns.

Javex uses Regulex (Unfortunately, it doesn't seem to be maintained anymore), for the visualization of regular expressions.