Page Curl
· This library allows to create an effect of turning pages, which can be used in book reader applications, custom on-boarding screens or elsewhere.
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 pagecurl-1.3.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.