OWASP Java Encoder Project
· The OWASP Encoders package is a collection of high-performance low-overhead
contextual encoders, that when utilized correctly, is an effective tool in
preventing Web Application security vulnerabilities such as Cross-Site
Scripting.
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 encoder-parent-1.2.3.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.