Member Avatar for it2051229

Ok I have two frames.. one frame calls the other frame so it's like a dialog box... the second frame pops out, and yeah i want to close this second frame with a button.. how do i do it?? I was also wondering let's just say that I have two buttons in my second frame a YES and a NO... when the YES or NO gets clicked, the second frame closes.. how will the first frame will know which of the two button closed the second frame

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Dani AI

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A common pattern is: the child window signals a result to the parent, then disposes itself. , , and already noted that dialogs simplify this, and showed hiding the window — both are valid. If you insist on a separate JFrame, prefer an explicit callback (listener) or a small result object instead of letting the child directly poke at the parent's UI.

Here is a simple, safe listener pattern (keeps responsibilities clear and avoids tight coupling):

public interface ResponseListener {
    void onResponse(String response);
}

public class ChildFrame extends JFrame {
    private final ResponseListener listener;
    public ChildFrame(ResponseListener listener) {
        this.listener = listener;
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        // add YES/NO buttons...
        yesButton.addActionListener(e -> finish("YES"));
        noButton.addActionListener(e -> finish("NO"));
    }
    private void finish(String r) {
        if (listener != null) listener.onResponse(r);
        dispose();
    }
}

Parent implements the interface and updates its UI on the EDT:

public class ParentFrame extends JFrame implements ResponseListener {
    void openChild() { new ChildFrame(this).setVisible(true); }
    public void onResponse(String r) {
        SwingUtilities.invokeLater(() -> myLabel.setText(r));
    }
}

Practical notes: use DISPOSE_ON_CLOSE so resources are freed; prefer passing immutable result objects for complex data; avoid direct component access across windows; ensure UI work runs on the Event Dispatch Thread; and consider a modal JDialog if you want the parent blocked until a choice is made (it often simplifies flow). These patterns keep code maintainable and avoid subtle bugs or memory leaks.

Recommended Answers

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Member Avatar for javaAddict

Instead of a second frame use a dialog box. Read in this JOptionPane the static methods that begin with show...(...) .

Member Avatar for it2051229

Oh come on man.. i want a FRAME.. a window.. don't limit my creativity :(

Member Avatar for masijade

Oh come on man.. i want a FRAME.. a window.. don't limit my creativity :(

You do know that you can handle a Dialog (or JDialog) in exactly the same way you do a JFrame, except that you do not have, per default, the min max buttons on the frame, right?

You don't have to use JOptionPane. Suggesting the use of, or using, a (J)Dialog does not "limit your creativity" in anyway, and it makes a few things in your life/coding much easier.

Edit: And a Dialog is a Window.

Member Avatar for mSJava

To close the second frame with the button you place the button where you want it, then you use actionperformed on that button. The code is:

/* jFrame1.pack();
jFrame1.setVisible(false); */

When you set the frame visible you have used setVisible with true.

I hope this helped? Because i am new of trying to explain for others.
/Me

Member Avatar for it2051229

ok this time the second frame pops up which was called by the first frame... What i want to do is to get some information to be passed into the first frame when the second frame closes. how do i do that?

Member Avatar for mSJava

ok this time the second frame pops up which was called by the first frame... What i want to do is to get some information to be passed into the first frame when the second frame closes. how do i do that?

Hi!
Well, you should probably put code under the button that are the close button (action performed). So when you close frame2 - this will happen in frame1 -, for an example in your textarea or what you use, in the place you want to show the information.
Or you can make a method with what you want to happen in frame1 and then you call that method from the close button actionperformed.

Good luck!

Member Avatar for Ezzaral

Of course, this is exactly what a Dialog is for...

Member Avatar for masijade

But you don't want to limit his creativity, do you? ;-)

Member Avatar for Ezzaral

Of course not! :P

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