Java Swing界面编程(25)---事件处理：鼠标事件及监听处理

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如果想对一个鼠标的操作进行监听，如果鼠标按下、松开等，则可以使用MouseListener接口。

package com.beyole.util;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import javax.swing.JFrame;import javax.swing.JScrollPane;import javax.swing.JTextArea;class MyMouseHandle extends JFrame implements MouseListener {private JTextArea text = new JTextArea();public MyMouseHandle() {super.setTitle("Crystal");// 设置标题JScrollPane pane = new JScrollPane(text);// 加入滚动条pane.setBounds(5, 5, 300, 200);// 设置绝对位置super.add(pane);// 向窗体中加入组件text.addMouseListener(this);// 加入mouse监听super.setSize(310, 210);super.setVisible(true);super.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent arg0) {System.exit(1);}});}public void mouseClicked(MouseEvent e)// 鼠标单击事件{int c = e.getButton();// 得到按下的鼠标键String mouseInfo = null;// 接收信息if (c == MouseEvent.BUTTON1)// 判断是鼠标左键按下{mouseInfo = "左键";} else if (c == MouseEvent.BUTTON3) {// 判断是鼠标右键按下mouseInfo = "右键";} else {mouseInfo = "滚轴";}text.append("鼠标单击：" + mouseInfo + ".\n");}public void mouseEntered(MouseEvent e)// 鼠标进入组件{text.append("鼠标进入组件.\n");}public void mouseExited(MouseEvent e)// 鼠标退出组件{text.append("鼠标退出组件.\n");}public void mousePressed(MouseEvent e)// 鼠标按下{text.append("鼠标按下.\n");}public void mouseReleased(MouseEvent e)// 鼠标松开{text.append("鼠标松开.\n");}}public class MyMouseEventDemo {public static void main(String[] args) {new MyMouseHandle();}}

程序截图：

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