Testify Project JUnit4 Jersey 2 System Test Archetype
· Creates a new quickstart project to system test Jersey 2 Application with Testify, JUnit4, Mockito, and AssertJ.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window junit-jersey-systemtest-archetype-1.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.