JTimber Package
· A module which just packages all necessary components into one zip file which can then be distributed to developers who are not using maven.
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 jtimber-package-0.1.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.