Apache Portals Applications
· Portals Applications is dedicated to providing robust, full-featured, commercial-quality, and freely available Portlet Applications under the Apache Software Foundation License.
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 applications-pom-1.3.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
