I am struggling to get to grips with Swing GUI for Java. I have been asked to make an ATM program, but have no idea where to start. I need a code that can create a GUI which does the following:

1. Start with a login dialog which asks for a Username and Password.

2. Once accepted the following buttons are available: deposit, withdraw, check balance, make a transfer, change password, logout.

3. Each button takes the user to a new screen and actually carries out the function (can actually deposit, withdraw, and check balance etc.).

The balance can start as any fixed value. Thank you in advance for any help, I am new to OOP so I would appreciate as much explanation as possible.