Unique4j Parent
· Java library to allow only single instance of a java application to run and enable communication between first instance and subsequent instances
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 unique4j-parent-2.1.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
