RobotoTextView
· Implementation of a TextView and all its direct/indirect subclasses with native support for the Roboto fonts, includes the brand new Roboto Slab and Roboto Mono fonts.
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 robototextview-4.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.