OWASP AntiSamy Project
· The OWASP AntiSamy project is a collection of APIs for safely allowing users to supply their own HTML and CSS without exposing the site to XSS vulnerabilities.
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 antisamy-project-1.4.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.