BetterPath
· A library that provides a pure JVM implementation of android.graphics.Path, with export, import, parcelization and serialization capabilities.
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 betterpath-0.0.4.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.