Swing - WindowListener 接口
处理 WindowEvent 的类应该实现这个接口。 该类的对象必须向组件注册。 可以使用 addWindowListener() 方法注册该对象。
接口声明
以下是 java.awt.event.WindowListener 接口的声明 −
public interface WindowListener extends EventListener
接口方法
| 序号 | 方法 & 描述 |
|---|---|
| 1 |
void windowActivated(WindowEvent e) 当 Window 设置为活动 Window 时调用。 |
| 2 |
void windowClosed(WindowEvent e) 当窗口因调用 Window 上的 dispose 而关闭时调用。 |
| 3 |
void windowClosing(WindowEvent e) 当用户尝试从 Window 的系统菜单关闭 Window 时调用。 |
| 4 |
void windowDeactivated(WindowEvent e) 当窗口不再是活动窗口时调用。 |
| 5 |
void windowDeiconified(WindowEvent e) 当窗口从最小化状态更改为正常状态时调用。 |
| 6 |
void windowIconified(WindowEvent e) 当 Window 从正常状态更改为最小化状态时调用。 |
| 7 |
void windowOpened(WindowEvent e) 第一次使 Window 可见时调用。 |
继承的方法
该接口继承了以下接口的方法 −
java.awt.EventListener
WindowListener 示例
在 D:/ > SWING > com > tutorialspoint > gui > 中使用您选择的任何编辑器创建以下 Java 程序
SwingListenerDemo.java
package com.tutorialspoint.gui;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class SwingListenerDemo {
private JFrame mainFrame;
private JLabel headerLabel;
private JLabel statusLabel;
private JPanel controlPanel;
private JFrame aboutFrame;
public SwingListenerDemo(){
prepareGUI();
}
public static void main(String[] args){
SwingListenerDemo swingListenerDemo = new SwingListenerDemo();
swingListenerDemo.showWindowListenerDemo();
}
private void prepareGUI(){
mainFrame = new JFrame("Java SWING Examples");
mainFrame.setSize(400,400);
mainFrame.setLayout(new GridLayout(3, 1));
headerLabel = new JLabel("",JLabel.CENTER );
statusLabel = new JLabel("",JLabel.CENTER);
statusLabel.setSize(350,100);
mainFrame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent windowEvent){
System.exit(0);
}
});
controlPanel = new JPanel();
controlPanel.setLayout(new FlowLayout());
mainFrame.add(headerLabel);
mainFrame.add(controlPanel);
mainFrame.add(statusLabel);
mainFrame.setVisible(true);
}
private void showWindowListenerDemo(){
headerLabel.setText("Listener in action: WindowListener");
JButton okButton = new JButton("OK");
aboutFrame = new JFrame();
aboutFrame.setSize(300,200);;
aboutFrame.setTitle("WindowListener Demo");
aboutFrame.addWindowListener(new CustomWindowListener());
JPanel panel = new JPanel();
panel.setBackground(Color.white);
JLabel msglabel = new JLabel("Welcome to TutorialsPoint SWING Tutorial."
,JLabel.CENTER);
panel.add(msglabel);
aboutFrame.add(panel);
aboutFrame.setVisible(true);
}
class CustomWindowListener implements WindowListener {
public void windowOpened(WindowEvent e) {
}
public void windowClosing(WindowEvent e) {
aboutFrame.dispose();
}
public void windowClosed(WindowEvent e) {
}
public void windowIconified(WindowEvent e) {
}
public void windowDeiconified(WindowEvent e) {
}
public void windowActivated(WindowEvent e) {
}
public void windowDeactivated(WindowEvent e) {
}
}
}
使用命令提示符编译程序。 转到 D:/ > SWING 并键入以下命令。
D:\SWING>javac com\tutorialspoint\gui\SwingListenerDemo.java
如果没有报错,说明编译成功。 使用以下命令运行程序。
D:\SWING>java com.tutorialspoint.gui.SwingListenerDemo
验证以下输出。

