Im trying to get a new window to open once I click the Add Customer button in my first window, but I have no idea how to do it. Could someone point me in the right direction?
A new "window"? Would that be a JDialog or a JFrame? You already know how to open a new JFrame, in fact you posted an example of that here. But you might well be better served by a JDialog to allow entry of customer information.
I want it to be another JFrame but I cant get 2 JFrame's to work. When I click the button I need to enter the customers info and have some buttons to select what I want to do with this info.
the text of each button indicates the screen's of your other frames might be detailed.
if so, using a CardLayout() might be a good soution:
build each screen via a JPanel
add each panel to a cardLayoutPanel
add the cardLayoutPanel to a frame
each button's actionPerformed simply shows the relative screen