java使用AWT关闭一个框架（而不是整个应用程序）

Question

单击后，如何仅关闭一个Frame而不是同时关闭两个或整个应用程序？ （我也尝试过AWT事件调度，EDT）

package test;

import java.awt.*;
import java.awt.AWTEvent;
import java.awt.EventQueue;
import java.awt.Toolkit;
import java.awt.event.*;
import java.lang.reflect.InvocationTargetException;

public class Test11 extends Frame implements MouseListener
{
  public static Frame gp;  
  public Test11()
  { 
    try {            
       this.setLayout (new BorderLayout ());
       Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
       this.setBounds(screen.width-400,33,400, 400);   
       this.setBackground(Color.red);
       this.addWindowListener(new WindowAdapter()
       {
         public void windowClosing(WindowEvent we) 
         {
           System.exit(0);
         }
       });       
       this.addMouseListener(this);       
       this.setVisible(true);
    } finally {
    }    
  }

  /* How do i do AWT Event Dispatch (EDT): to cloase AWT window? */
  public static void main(String[] args) throws InterruptedException, InvocationTargetException 
  {
    /* EDT: AWT Event Dispatch
    EventQueue eventQueue = Toolkit.getDefaultToolkit().getSystemEventQueue();
    eventQueue.push(new MyEventQueue()); */

    /* Simple close */
    EventQueue.invokeAndWait(new Runnable() 
    {
      public void run() 
      {
        System.out.println("Run: Window 1");
        gp = new Test11();
        gp.setVisible(true);      
        //gp.setVisible(false);
      }
    });

    /* Simple close */
    EventQueue.invokeAndWait(new Runnable() 
    {
      public void run() 
      {
        System.out.println("Run: Window 2");
        new Test11().setVisible(true);
      }
    });

  }

  @Override
  public void mouseClicked(MouseEvent me) 
  {
    System.out.println("Clicked: out of Window1 or Window2, close only any one not whole application");
    System.exit(0);
  }

  @Override
  public void mousePressed(MouseEvent me) {
    throw new UnsupportedOperationException("Not supported yet.");
  }

  @Override
  public void mouseReleased(MouseEvent me) {
    throw new UnsupportedOperationException("Not supported yet.");
  }

  @Override
  public void mouseEntered(MouseEvent me) {
    throw new UnsupportedOperationException("Not supported yet.");
  }

  @Override
  public void mouseExited(MouseEvent me) {
    throw new UnsupportedOperationException("Not supported yet.");
  }

  /* EDT: Extended class
  private static class MyEventQueue extends EventQueue 
  {
    public void postEvent(AWTEvent theEvent) 
    {
      System.out.println("Event Posted"); 
      super.postEvent(theEvent);
    }
  }
  */  
}

跟进：

import java.awt.*;
import java.awt.event.*;

public class Test11 extends Frame 
{
    public static Frame window1;
    public static Frame window2;

    public Test11(String title) {
        super(title);
        setSize(400, 400);
        setBackground(Color.red);
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                System.out.println(
                    getTitle() +
                    " says Bye-Bye!  " +
                    new java.util.Date());
                dispose();
            }
        });
        setLocationByPlatform(true);
    }

    public static void main(String[] args) {
        /* AFAIU starting the GUI on the EDT only applies to Swing.*/
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                System.out.println("Run: Window 1");
                window1 = new Test11("Window 1");
                window1.setVisible(true);

                System.out.println("Run: Window 2");
                window2 = new Test11("Window 2"); 
                window2.setVisible(true);
            }
        });

        /* Remotely: i need to close thi window, not manually */
        window2.setVisible(false);
        /* failed then try */
        window2.dispose();

        /* Now: I should have only Window1, but that i am not able to make yet */
    }
}

Answer 1

最简单的方法是使用：

dispose();

如果放置在onClickListener中，则只需关闭与文件关联的窗口。这不会终止整个程序

Answer 2

import java.awt.*;
import java.awt.event.*;

public class Test11 extends Frame {

    public Test11(String title) {
        super(title);
        setSize(400, 400);
        setBackground(Color.red);
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                System.out.println(
                    getTitle() +
                    " says Bye-Bye!  " +
                    new java.util.Date());
                dispose();
            }
        });
        setLocationByPlatform(true);
    }

    public static void main(String[] args) {
        /* AFAIU starting the GUI on the EDT only applies to Swing.*/
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                System.out.println("Run: Window 1");
                (new Test11("Window 1")).setVisible(true);
                System.out.println("Run: Window 2");
                (new Test11("Window 2")).setVisible(true);
            }
        });
    }
}

典型输出

Run: Window 1
Run: Window 2
Window 1 says Bye-Bye!  Mon Nov 14 10:20:25 EST 2011
Window 2 says Bye-Bye!  Mon Nov 14 10:20:35 EST 2011
Press any key to continue . . .

更新1

此代码以编程方式关闭“窗口2”。您的版本出现了“计时”问题，这是由稍后调用引起的（您认为这是什么意思？）。它可以用两种相对简单的方法之一进行修复

1. 乱七八糟的。添加一个Swing Timer/ActionListener设置，使其在主运行后2秒关闭。对于该路由，去掉main中所有注释代码行的“注释部分”
2. 更好的解决方案。删除对EventQueue.invokeLater()的调用，这与AWT组件无关

这是修改后的代码：

import java.awt.*;
import java.awt.event.*;
// since the OP has not taken the time to explain 'why AWT',
// I choose to make life easy by using a Swing class.
import javax.swing.Timer;

public class Test11 extends Frame
{
    public static Frame window1;
    public static Frame window2;

    public Test11(String title) {
        super(title);
        setSize(400, 400);
        setBackground(Color.red);
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                System.out.println(
                    getTitle() +
                    " says Bye-Bye!  " +
                    new java.util.Date());
                dispose();
            }
        });
        setLocationByPlatform(true);
    }

    public static void main(String[] args) {
        // AFAIU starting the GUI on the EDT only applies to Swing.
        //EventQueue.invokeLater(new Runnable() {
        //    public void run() {
                System.out.println("Run: Window 1");
                window1 = new Test11("Window 1");
                window1.setVisible(true);

                System.out.println("Run: Window 2");
                window2 = new Test11("Window 2");
                window2.setVisible(true);
        //    }
        //});

        //ActionListener closeWindow = new ActionListener(){
        //  public void actionPerformed(ActionEvent ae) {
                System.out.println(
                    window2.getTitle() +
                    " says Bye-Bye!  " +
                    new java.util.Date());
                /* failed then try */
                window2.dispose();
        //  }
        //};
        //Timer timer = new Timer(2000,closeWindow);
        //timer.setRepeats(false);
        //timer.start();
    }
}

Answer 3

在设计模式下，您必须使用右clic转到jframe的属性并选择： 在defaultcloseoperation行中处理（通常是第一行）

所有这些操作在设计上都比较容易。 我说的是netbeans，但我希望它在另一个ide中也类似

Answer 4

看看setDefaultCloseOperation()：HIDE_ON_CLOSE是该行为的正确属性，这些方法对Swing有效

编辑：

如果要重用此/这些容器，则

this.addWindowListener(new WindowAdapter() {
    public void windowClosing(WindowEvent we) {
        this.setVisible(false);
    }
});