Aperte Reports
· Aperte Reports aims to provide lightweight reporting platform for Liferay.
Unlike Jasper Server, it requires no external server.
The application can be deployed on any application server supporting JMS and embedded with Liferay.
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 apertereports-2.4.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.