1、通过实现WindowListener接口来实现Windows监听器：
1 import java.awt.event.WindowEvent;
2 import java.awt.event.WindowListener;
3
4 import javax.swing.JFrame;
5
6 public class WindowsListenerFrame extends JFrame implements WindowListener {
7
8 public WindowsListenerFrame() {
9 this.setTitle("窗体事件");
10 setSize(600, 400);
11 setResizable(false);
12 setLocationRelativeTo(null);
13
14 this.addWindowListener(this);
15 }
16
17 public static void main(String[] args) {
18 JFrame frame = new WindowsListenerFrame();
19 frame.setVisible(true);
20 }
21
22 @Override
23 public void windowActivated(WindowEvent event) {
24 }
25
26 @Override
27 public void windowClosed(WindowEvent arg0) {
28 }
29
30 @Override
31 public void windowClosing(WindowEvent arg0) {
32 this.dispose();
33 }
34
35 @Override
36 public void windowDeactivated(WindowEvent arg0) {
37 }
38
39 @Override
40 public void windowDeiconified(WindowEvent arg0) {
41 }
42
43 @Override
44 public void windowIconified(WindowEvent arg0) {
45 }
46
47 @Override
48 public void windowOpened(WindowEvent arg0) {
49 }
50 }
2、通过实现WindowAdapter接口来实现Windows监听器：
1 import java.awt.event.WindowAdapter;
2 import java.awt.event.WindowEvent;
3 import java.awt.event.WindowListener;
4 import javax.swing.JFrame;
5
6 public class WindowAdapterFrame extends JFrame{
7 public WindowAdapterFrame() {
8 setTitle("窗体适配器");
9 setSize(600, 400);
10 setResizable(false);
11
12 WindowListener listener =new WindowAdapter() {
13 @Override
14 public void windowClosing(WindowEvent e) {
15 dispose();
16 }
17 };
18 this.addWindowListener(listener);
19 }
20 public static void main(String[] args) {
21 JFrame frame=new WindowAdapterFrame();
22 frame.setVisible(true);
23 }
24 }
3、通过实现MouseListener、MouseMotionListener接口来实现Mouse监听器：
1 import java.awt.BorderLayout;
2 import java.awt.Container;
3 import java.awt.event.MouseEvent;
4 import java.awt.event.MouseListener;
5 import java.awt.event.MouseMotionListener;
6
7 import javax.swing.JFrame;
8 import javax.swing.JLabel;
9
10 public class MouseListenerFrame extends JFrame implements MouseListener, MouseMotionListener{
11 JLabel lblStatus=null;
12 public MouseListenerFrame() {
13 setTitle("MouseListener");
14 setSize(600, 400);
15 setDefaultCloseOperation(EXIT_ON_CLOSE);
16 setResizable(false);
17
18 Container container =this.getContentPane();
19 lblStatus=new JLabel();
20 container.add(BorderLayout.SOUTH, lblStatus);
21
22 container.addMouseListener(this);
23 container.addMouseMotionListener(this);
24 }
25 /**
26 * 值得注意的是String.format()方法的调用格式，是用","来隔开各个参数
27 */
28 @Override
29 public void mouseClicked(MouseEvent event) {
30 String msg=String.format("鼠标点击[%d, %d]",event.getX(),event.getY());
31 lblStatus.setText(msg);
32 }
33 @Override
34 public void mousePressed(MouseEvent e) {
35 String button=null;
36 if(MouseEvent.BUTTON1==e.getButton()) {
37 button="左键";
38 }else if(MouseEvent.BUTTON2==e.getButton()) {
39 button="滚轮";
40 }else if(MouseEvent.BUTTON3==e.getButton()) {
41 button="右键";
42 }
43 String msg=String.format("鼠标 %s 按下[%d,%d]",button,e.getX(),e.getY());
44 lblStatus.setText(msg);
45 }
46 @Override
47 public void mouseReleased(MouseEvent e) {
48 String msg=String.format("鼠标释放[%d,%d]",e.getX(),e.getY());
49 lblStatus.setText(msg);
50 }
51 @Override
52 public void mouseEntered(MouseEvent e) {
53 String msg=String.format("鼠标进入[%d,%d]",e.getX(),e.getY());
54 lblStatus.setText(msg);
55 }
56 @Override
57 public void mouseExited(MouseEvent e) {
58 String msg=String.format("鼠标退出[%d,%d]",e.getX(),e.getY());
59 lblStatus.setText(msg);
60 }
61 @Override
62 public void mouseDragged(MouseEvent e) {
63 String msg=String.format("鼠标拖动，当前坐标 [%d,%d]",e.getX(),e.getY());
64 lblStatus.setText(msg);
65 }
66 @Override
67 public void mouseMoved(MouseEvent e) {
68 String msg=String.format("鼠标移动，当前坐标 [%d,%d]",e.getX(),e.getY());
69 lblStatus.setText(msg);
70 }
71 public static void main(String[] args) {
72 JFrame frame=new MouseListenerFrame();
73 frame.setVisible(true);
74 }
75 }
4、通过实现KeyListener接口来实现Key监听器：
1 import java.awt.BorderLayout;
2 import java.awt.Container;
3 import java.awt.event.KeyEvent;
4 import java.awt.event.KeyListener;
5
6 import javax.swing.JFrame;
7 import javax.swing.JLabel;
8 import javax.swing.JTextArea;
9
10 public class KeyListenerFrame extends JFrame implements KeyListener {
11 // 1. 属性
12 JLabel lblStatus = null;
13
14 // 2. 方法
15 public KeyListenerFrame() {
16 this.setTitle("鼠标事件");
17 setSize(600, 400);
18 setResizable(false);
19 setLocationRelativeTo(null);
20 setDefaultCloseOperation(EXIT_ON_CLOSE);
21
22 Container contentPane = this.getContentPane();
23
24 lblStatus = new JLabel();
25 contentPane.add(BorderLayout.SOUTH, lblStatus);
26
27 JTextArea txaEdit = new JTextArea();
28 contentPane.add(BorderLayout.CENTER, txaEdit);
29
30 txaEdit.addKeyListener(this);
31 }
32
33 public static void main(String[] args) {
34 JFrame frame = new KeyListenerFrame();
35 frame.setVisible(true);
36 }
37
38 @Override
39 public void keyPressed(KeyEvent event) {
40 lblStatus.setText("键盘按下: " + event.getKeyChar() + "(" + event.getKeyCode() + ")");
41 }
42
43 @Override
44 public void keyReleased(KeyEvent event) {
45 lblStatus.setText("键盘放开: " + event.getKeyChar() + "(" + event.getKeyCode() + ")");
46 }
47
48 @Override
49 public void keyTyped(KeyEvent event) {
50 lblStatus.setText("键盘敲击: " + event.getKeyChar() + "(" + event.getKeyCode() + ")");
51 }
52 }
原文地址：https://www.cnblogs.com/LJHAHA/p/10210886.html
时间： 2024-10-07 11:12:06