Since you're using Java, why not start incorporating JUnit tests into your packages? JUnit is simple enough to get started with and testing is fairly straight f

Since you're using Java, why not start incorporating JUnit tests into your packages? JUnit is simple enough to get started with and testing is fairly straight forward. Most of the modern IDEs for Java support running JUnit tests. Good places to start adding tests would be wherever there is critical business logic or areas of code that used very frequently. If you could spare the time, try adding some tests everywhere. But if you can't, add tests to all new functionality or areas that are being updated for bug fixes at the minimum. Once you've got some tests in place, use a build system (i.e. Jenkins) and have your units run every time there is a check-in to source control. Possibly create some build tasks using Gradle and have your unit tests run at compile time for Java.