https://stackoverflow.com/questions/2131935/automatic-generation-of-unit-tests-for-java http://www.evosuite.org/evosuite/
Automated JUnit Generation | Agitar Technologies: Putting Java to the Test http://www.agitar.com/solutions/products/automated_junit_generation.html
Randoop: Automatic unit test generation for Java https://randoop.github.io/randoop/