监听多类事件代码,Java代码库,德仔网

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【Java】监听多类事件

作者:Dezai.CN / 发布于2011/1/25/ 576

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;</div>
<div>// TwoListener类同时实现MouseMotionListener
// 和MouseListener两个接口
public class TwoListener implements MouseMotionListener, MouseListener {
private JFrame frame;
private JTextField tf;
public static void main(String args[]) {
TwoListener two = new TwoListener();
two.go();
}
public void go() {
frame = new JFrame("Two listeners example");
Container contentPane = frame.getContentPane();
contentPane.add(new Label("Click and drag the mouse"),
BorderLayout.NORTH);
tf = new JTextField(30);
contentPane.add(tf, BorderLayout.SOUTH);
// 注册监听程序
frame.addMouseMotionListener(this);
frame.addMouseListener(this);
frame.setSize(300, 300);
frame.setVisible(true);
}
// 实现 MouseMotionListener接口中的方法
public void mouseDragged(MouseEvent e) {
String s = "Mouse dragging: X = " + e.getX() + "Y = " + e.getY();
tf.setText(s);
}
public void mouseMoved(MouseEvent e) {
}
// 实现 MouseListener 接口中的方法
public void mouseClicked(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
String s = "The mouse entered";
tf.setText(s);
}
public void mouseExited(MouseEvent e) {
String s = "The mouse has left the building";
tf.setText(s);
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
}
<div>

</div>

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