Question

Java Swing 监听系统关闭事件

当我想关闭一个窗口时，点击右上角的X，此时我想让它弹出提示：“是否关闭当前窗口”，请问如何对关闭事件进行监听，请高手写个小程序让我学习学习.谢谢.

Answer 1

// 要用到其他的地方去.只要复制我标识的中间点就可以了.

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class tt extends JFrame {
public tt() {
//-------------------- 关闭监听----------
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
int a = JOptionPane.showConfirmDialog(null, "确定关闭吗？", "温馨提示",
JOptionPane.YES_NO_OPTION);
if (a == 0) {
System.exit(0); //关闭
}
}
});
//--------------------
setSize(100, 100);
setVisible(true);
}

public static void main(String[] args) {
tt t = new tt();
t.setDefaultCloseOperation(3);
}
}

Answer 2

对Frame 的OnClosing事件进行监听和处理
在里面再写个弹出对话框确认就行了

系统重装还没有装Java环境
不然给你写个了。。

Answer 3

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Window extends JFrame implements WindowListener
{
public Window()
{
this.addWindowListener(this);
this.setBounds(100,100,300,200);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void windowClosing(WindowEvent e)
{
JOptionPane.showMessageDialog(this,"是否关闭当前窗口?");
}
public void windowActivated(WindowEvent e) {};
public void windowClosed(WindowEvent e) {};
public void windowDeactivated(WindowEvent e) {};
public void windowDeiconified(WindowEvent e) {};
public void windowIconified(WindowEvent e) {};
public void windowOpened(WindowEvent e) {};

public static void main(String[] args)
{
new Window();
}
}

Answer 4

少研究点java编写这样小程序吧，除非你以后想入行开发java程序
工作根本用不到这个的
去研究J2EE吧 不要研究这个了