de.rub.nds.tls:coffee4j-anvil-aggregate
· coffee4j is a framework that integrates combinatorial test generation and automated test execution via JUnit5
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 coffee4j-anvil-aggregate-1.0.6.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.