Java 鼠标点击事件实例

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首先我们应该知道鼠标点击事件怎么实现

其部分代码如下

if (anyEvent.getButton() == MouseEvent.BUTTON1) {}

e.getButton()返回值分别为NOBUTTON、BUTTON1、BUTTON2、BUTTON3,分别代表着无点击、左击、中间键、右击三种情况

<span style="font-family:Verdana;">事件源</span>.addMouseListener(new MouseAdapter() {//建立事件处理机制@Overridepublic void mouseClicked(MouseEvent e) {if(e.getButton()==e.BUTTON1){//点击鼠标左键int x=e.getX();int y=e.getY();String str="您点击的是左键，鼠标当前点击位置的坐标是(" + x + "," + y+")";label.setText(str);}else if(e.getButton()==e.BUTTON2){//点击鼠标滑轮int x=e.getX();int y=e.getY();String str="您点击的是滑轮，鼠标当前点击位置的坐标是(" + x + "," + y+")";label.setText(str);}else if(e.getButton()==e.BUTTON3){//点击鼠标右键int x=e.getX();int y=e.getY();String str="您点击的是右键，鼠标当前点击位置的坐标是(" + x + "," + y+")";label.setText(str);}}});

具体实例，原题是《Java基础入门》

package BookProblem;import java.awt.BorderLayout;import java.awt.EventQueue;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.border.EmptyBorder;import javax.swing.JLabel;import java.awt.Color;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;public class P381Problem6A extends JFrame {private JPanel contentPane;/** * Launch the application. */public static void main(String[] args) {EventQueue.invokeLater(new Runnable() {public void run() {try {P381Problem6A frame = new P381Problem6A();frame.setVisible(true);} catch (Exception e) {e.printStackTrace();}}});}/** * Create the frame. */public P381Problem6A() {setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 450, 300);contentPane = new JPanel();contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));setContentPane(contentPane);contentPane.setLayout(null);JLabel label = new JLabel("此处显示鼠标右键点击的坐标");label.setBounds(5, 5, 424, 31);label.setOpaque(true);//设置控件不透明label.setBackground(Color.GREEN); //<span style="font-family:Verdana;">设置标间颜色</span>contentPane.add(label);contentPane.addMouseListener(new MouseAdapter() {@Overridepublic void mouseClicked(MouseEvent e) {if(e.getButton()==e.BUTTON1){int x=e.getX();int y=e.getY();String str="您点击的是左键，鼠标当前点击位置的坐标是(" + x + "," + y+")";label.setText(str);}else if(e.getButton()==e.BUTTON2){int x=e.getX();int y=e.getY();String str="您点击的是滑轮，鼠标当前点击位置的坐标是(" + x + "," + y+")";label.setText(str);}else if(e.getButton()==e.BUTTON3){int x=e.getX();int y=e.getY();String str="您点击的是右键，鼠标当前点击位置的坐标是(" + x + "," + y+")";label.setText(str);}}});}}

效果图

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