MaskedEditText
· This is a masked edit text widget for Android. It handles copy and paste, cursor positioning without being super slow or doing complicated things.
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 maskededittext-1.1.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.