Write a GUI-based program that allows a bank manager to view and manipulate the accounts in a bank. The window should display the information for the currently selected account in editable entry...

Write a GUI-based program that allows a bank manager to view and manipulate the accounts in a bank. The window should display the information for the currently selected account in editable entry fields. Command buttons should allow the user to navigate to the next account and the previous account, assuming that the accounts are ordered by a PIN. Add a method getPins() to the Bank class. This method should build and return a sorted list of the PINs in the bank. The GUI should use this method to help locate the first account, next account, and previous account. Command buttons should also allow the user to remove an account, save an account’s edited information, and add a new account. When a new account is added, the entry fields should be reset to default values and the Save Changes button should create the account.