require-directory
· Recursively iterates over specified directory, require()'ing each file, and returning a nested hash structure containing those modules.
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 require-directory-2.1.1.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
