Slib is a JAVA library dedicated to semantic data analysis. The project currently focuses on semantic data represented as semantic graphs (networks). The Semantic Measures Library (SML) is a sub-project of the Slib.
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 slib-0.9.1.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.