vgscollect
· VGS Collect - is a product suite that allows customers to collect information securely without possession of it. VGS Collect Android SDK allows you to securely collect data from your users via forms without having to have that data pass through your systems. The form fields behave like traditional input fields while securing access to the unsecured data.
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 vgscollect-1.8.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.