如何以编程方式关闭JFrame

#1 楼

frame.dispatchEvent(new WindowEvent(frame, WindowEvent.WINDOW_CLOSING));

#2 楼

setVisible(false); //you can't see me!
dispose(); //Destroy the JFrame object

#3 楼

#4 楼

frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

public void pullThePlug() {
    // this will make sure WindowListener.windowClosing() et al. will be called.
    WindowEvent wev = new WindowEvent(this, WindowEvent.WINDOW_CLOSING);
    Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(wev);

    // this will hide and dispose the frame, so that the application quits by
    // itself if there is nothing else around. 
    setVisible(false);
    dispose();
    // if you have other similar frames around, you should dispose them, too.

    // finally, call this to really exit. 
    // i/o libraries such as WiiRemoteJ need this. 
    // also, this is what swing does for JFrame.EXIT_ON_CLOSE
    System.exit(0); 
}

#5 楼

System.exit(0); // stop program
frame.dispose(); // close window
frame.setVisible(false); // hide window

#6 楼

import java.awt.event.*;
import javax.swing.*;

public class ExitApp extends JFrame
{
   public ExitApp()
   {
      addWindowListener(new WindowAdapter()
      {
         public void windowClosing(WindowEvent e)
         {
           dispose();
           System.exit(0); //calling the method is a must
         }
      });
   }

   public static void main(String[] args)
   {
      ExitApp app=new ExitApp();
      app.setBounds(133,100,532,400);
      app.setVisible(true);
   }
}

#7 楼

myFrame.dispatchEvent(new WindowEvent(myFrame, WindowEvent.WINDOW_CLOSING));

#8 楼

private WindowAdapter windowAdapter = null;

private void initFrame() {

    this.windowAdapter = new WindowAdapter() {
        // WINDOW_CLOSING event handler
        @Override
        public void windowClosing(WindowEvent e) {
            super.windowClosing(e);
            // You can still stop closing if you want to
            int res = JOptionPane.showConfirmDialog(ClosableFrame.this, "Are you sure you want to close?", "Close?", JOptionPane.YES_NO_OPTION);
            if ( res == 0 ) {
                // dispose method issues the WINDOW_CLOSED event
                ClosableFrame.this.dispose();
            }
        }

        // WINDOW_CLOSED event handler
        @Override
        public void windowClosed(WindowEvent e) {
            super.windowClosed(e);
            // Close application if you want to with System.exit(0)
            // but don't forget to dispose of all resources 
            // like child frames, threads, ...
            // System.exit(0);
        }
    };

    // when you press "X" the WINDOW_CLOSING event is called but that is it
    // nothing else happens
    this.setDefaultCloseOperation(ClosableFrame.DO_NOTHING_ON_CLOSE);
    // don't forget this
    this.addWindowListener(this.windowAdapter);
}

WindowEvent closingEvent = new WindowEvent(targetFrame, WindowEvent.WINDOW_CLOSING);
Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(closingEvent);

#9 楼

 myFrame.dispatchEvent(new WindowEvent(myFrame, WindowEvent.WINDOW_CLOSING));

#10 楼

setVisible(false); //you can't see me!
dispose(); //Destroy the JFrame object

#11 楼

public class WindowConfirmedCloseAdapter extends WindowAdapter {

    public void windowClosing(WindowEvent e) {

        Object options[] = {"Yes", "No"};

        int close = JOptionPane.showOptionDialog(e.getComponent(),
                "Really want to close this application?\n", "Attention",
                JOptionPane.YES_NO_OPTION,
                JOptionPane.INFORMATION_MESSAGE,
                null,
                options,
                null);

        if(close == JOptionPane.YES_OPTION) {
           ((JFrame)e.getSource()).setDefaultCloseOperation(
                   JFrame.EXIT_ON_CLOSE);
        } else {
           ((JFrame)e.getSource()).setDefaultCloseOperation(
                   JFrame.DO_NOTHING_ON_CLOSE);
        }
    }
}

public class ConfirmedCloseWindow extends JFrame {

    public ConfirmedCloseWindow() {

        addWindowListener(new WindowConfirmedCloseAdapter());
    }

    private void closeWindow() {
        processWindowEvent(new WindowEvent(this, WindowEvent.WINDOW_CLOSING));
    }
}

#12 楼

JFrame frame= new JFrame()
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// frame stuffs here ...

frame.dispatchEvent(new WindowEvent(frame, WindowEvent.WINDOW_CLOSING));

#13 楼

public void closeWindow()
{
    if(awtWindow_ != null) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                awtWindow_.dispatchEvent(new WindowEvent(awtWindow_, WindowEvent.WINDOW_CLOSING));
            }
        });
    }
}

#14 楼

 private void formWindowClosing(java.awt.event.WindowEvent evt) {                                   
    int selectedOption = JOptionPane.showConfirmDialog(null,
            "Do you want to exit?",
            "FrameToClose",
            JOptionPane.YES_NO_OPTION);
    if (selectedOption == JOptionPane.YES_OPTION) {
        setVisible(false);
        dispose();
    } else {
        setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE);
    }
}    

#15 楼

// closing down the window makes sense as a method, so here are
// the salient parts of what happens with the JFrame extending class ..

    public class FooWindow extends JFrame {
        public FooWindow() {
            setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            setBounds(5, 5, 400, 300);  // yeah yeah, this is an example ;P
            setVisible(true);
        }
        public void pullThePlug() {
                WindowEvent wev = new WindowEvent(this, WindowEvent.WINDOW_CLOSING);
                Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(wev);
        }
    }

// Here's how that would be employed from elsewhere -

    // someplace the window gets created ..
    FooWindow fooey = new FooWindow();
    ...
    // and someplace else, you can close it thusly
    fooey.pullThePlug();

#16 楼

#17 楼

 setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);