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and I changed it up to what I have below. When I try an incorrect username and or password it does what it's supposed to and clears the text boxes. But if I try to login again it then does not work whether I use the correct username/password or not.
make this change and you'll probably find you're using the wrong listener
//System.out.println("in first If statement");
you seem to be trying to use JOptionPane's simplicity for something a bit more complex.
use a straight JDialog with a JPanel containing your label/text/password fields,
add a button with actionListener and it should work OK
Okay here's what I have. I have the login screen(lables, textboxes, buttons) all on one line. How can I change this? When I set a layout manager the login screen does not appear then. I also have a null pointer exception when I get the username/password right.