JWalk is another unit testing tool for the Java platform, which supports the Lazy Systematic Unit testing paradigm. It was developed by Anthony Simons. JWalk tests a single class, and produces the test report by notions of "lazy specification" and "systematic testing". It is more favorable for agile development, where no formal specification needs to be produced. It saves a lot of time and effort by constructing and presenting the automatic test cases.

The following are the features of JWalk:

• Systematic proposal of all probable test cases
• No need to confirm the subset of the test outcome by tester
• Can predict test outcomes
• Generates new test if the class has been modified
• Suitable for TDD for extreme programming in software development