Across standard module that provides a set of generic services for accessing files across different types
of file repositories (eg. disk, remote storage...).
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 file-manager-module-project-1.4.0.RELEASE.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
