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Answer 1

+1 A:

new FreelanceBillingUI().setVisible(false);
new customerInfoUI().setVisible(true);

That's what it is suppose to do, create new frames. You should keep references to your old frames and call setVisible(false) on them, not on newly created instances.

tulskiy 2009-10-22 00:06:15

Answer 2

A:

As Pilgrim already said, you've got a problem because you're not holding an instance to the JFrame that you're creating. You should be doing something like:

FreelanceBillingUI frame = newFreelanceBillingUI();
frame.setVisible(true);

... more stuff to do with the frame...

frame.setVisible(false);

Why are you trying to make the frame invisible? Are you trying to close it definitively, or you just want to hide it temporarily? Do you want to close the application when the frame is closed? You should take a look at the method setDefaultCloseOperation of JFrame.

For instance, with the following code you can configure you frame to close the application when the frame is closed:

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Take a look at the other possible values (DISPOSE_ON_CLOSE, DO_NOTHING_ON_CLOSE, and HIDE_ON_CLOSE).

nozebacle 2009-10-22 00:21:06

Because the program will have 5 different sections, each section has it's own window. When you go from the main menu to one of the options the main menu window should go away, and when you close the section window the main menu should come back.Even if I set it toFreelanceBillingUI frame = newFreelanceBillingUI();when I call -frame.setVisible(true);under the event for the button, it just tells me it cant find the variable.

Jason 2009-10-22 03:29:49

Answer 3

A:

You have to change

private void custClicked(java.awt.event.MouseEvent evt) {
    new FreelanceBillingUI().setVisible(false);
    new customerInfoUI().setVisible(true);
}

Into:

private void custClicked(java.awt.event.MouseEvent evt) {
    this.setVisible(false);
    new customerInfoUI().setVisible(true);
}

Because you make in the first code a new instance from FreelanceBillingUI by writing
new FreelanceBillingUI(). That new instance who's not visible, make you invisible. So, nothing will happen.

So you have to know what the difference between a new instance (calling a construcor) and a variable.

Martijn Courteaux 2009-10-22 06:37:54

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setVisibile(false) not hiding the frame

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