testmultilistener.java

来自「本压缩文件中含有线程的控制」· Java 代码 · 共 42 行

package gui;

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;

public class TestMultiListener {
	JFrame f = new JFrame("多重监听器测试");
	JTextField tf = new JTextField(30);

	public TestMultiListener() {
		f.getContentPane().add(new JLabel("请按下鼠标左键并拖动"), "North");
		f.getContentPane().add(tf, "South");
		f.addMouseMotionListener(new MouseMotionAdapter(){
			public void mouseDragged(MouseEvent e) {
				String s = "鼠标拖动到位置（" + e.getX() + "," + e.getY() + ")";
				tf.setText(s);
			}
			
		});
		f.addMouseListener(new MouseAdapter(){
			public void mouseEntered(MouseEvent e) {
				String s = "鼠标已进入窗体";
				tf.setText(s);
			}

			public void mouseExited(MouseEvent e) {
				String s = "鼠标已移出窗体";
				tf.setText(s);
			}
		});
		f.setSize(300, 200);
		f.setLocation(400,200);
		f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		f.setVisible(true);
	}

	public static void main(String args[]) {
		TestMultiListener t = new TestMultiListener();
	}
}