portletunit2-top-level
· PortletUnit is a jUnit Java Unit Testing Framework for testing JSR-168 portlets. It is built on ServletUnit and Pluto. It provides a mock portlet container as ServletUnit provides a mock servlet container.
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 portletunit2-top-level-1.0.2.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.