JFrame close question

Say If i have two classes, in each class is a different JFrame, e.g JFrame A and JFrame B ( in seperate classes).

Now from the constructor of JFrame A I may push a button with an actionlistener attached, which will instantiate the other cl开发者_Go百科ass, thus creating JFrame B. The problem is when JFrame B is created, both the JFrames are visible. If i close JFrame B, then JFrame A closes as well. How can i make it so only JFrame B closes?

Thanks

edit DISPOSE_ON_CLOSE does not work for me, it closes all the jframes.

some sample code:

public class classone {
  public classone() {
    JFrame a = new JFrame("this is A");
    classtwo newFrame = new classtwo(); 
  }
}

public class classtwo {
  public classtwo() {
    Jframe b = new JFrame("this is B");
    b.setDefaultCloseOperation(b.DISPOSE_ON_EXIT);
  }
}

please ignore any syntax errors, just for demonstration.

For the JFrame B, set the default close operation to "dispose" as shown below :

frameB.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

Then closing the child windows won't shut down your entire application.

HTH ! ;-)

Do you have DISPOSE_ON_CLOSE on one frame and EXIT_ON_CLOSE on the other? If so then that would explain why your program is exiting prematurely. Ensure that all frames are set to DISPOSE_ON_CLOSE.

I got question now. Just when you create an instance of a Window tell how this object live, Review this code

...
        new JFrame(){
            @Override
            public synchronized void addWindowListener(WindowListener l) {
                // You may ask here also add windowClosing method and look at my previous post
                super.addWindowListener(l);
            }
        }.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
....

Just DO_NOTHING_ON_CLOSE and addWindowListener in WindowClosing method show a JOptionPane.showConfirmDia and if result return no(1) then return; else system.exit(0); its all

I see my first StackOverFlow post ,What a shame! I'm editting my post.here you are;

Until now , I realize Depending developing software approachs Swing getting older. I'm missing a technology like Microsofts XAML.

soyatec inc. has some deals using XAML with java you may have a look but "In my opinion" not successfull work.Anyway...

    JFrame frame=new JFrame();
    frame.addWindowListener(new WindowListener() {

        @Override
        public void windowClosing(WindowEvent e) {
            int result= JOptionPane.showConfirmDialog(JOptionPane.getRootFrame() //or your parent swing element
                    , "Sure ?");
            switch (result) {
            case 1:

                break;
            default:
                System.exit(0);
                break;
            }
        }

        @Override
        public void windowActivated(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowClosed(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowDeactivated(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowDeiconified(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowIconified(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowOpened(WindowEvent e) {
            // TODO Auto-generated method stub

        }
    }
            );