java获取鼠标在屏幕上坐标的方法

import java.awt.BorderLayout;import java.awt.FlowLayout;import javax.swing.JButton;import javax.swing.JDialog;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.border.EmptyBorder;import javax.swing.JLabel;import java.awt.Font;import java.awt.Point;import java.util.Timer;import java.util.TimerTask;import java.awt.Color;public class MouseInfo extends JFrame {  private final JPanel contentPanel = new JPanel();  JLabel value_x = null;  JLabel value_y = null;  /**   * Launch the application.   */  public static void main(String[] args) {    try {      MouseInfo info_frame = new MouseInfo();      info_frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);      info_frame.setVisible(true);      info_frame.setAlwaysOnTop(true);      Timer timer = new Timer();      timer.schedule(new TimerTask() {        @Override        public void run() {          Point point = java.awt.MouseInfo.getPointerInfo().getLocation();          // System.out.println("Location:x=" + point.x + ", y=" +          // point.y);          info_frame.value_x.setText("" + point.x);          info_frame.value_y.setText("" + point.y);        }      }, 100, 100);    } catch (Exception e) {      e.printStackTrace();    }  }  /**   * Create the dialog.   */  public MouseInfo() {    setTitle("/u9F20/u6807/u5750/u6807/u83B7/u53D6/u5668");    setBounds(100, 100, 217, 156);    getContentPane().setLayout(new BorderLayout());    contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));    getContentPane().add(contentPanel, BorderLayout.CENTER);    contentPanel.setLayout(null);    JLabel lblx = new JLabel("/u5750/u6807x:");    lblx.setFont(new Font("宋体", Font.PLAIN, 15));    lblx.setBounds(22, 27, 66, 31);    contentPanel.add(lblx);    JLabel lbly = new JLabel("/u5750/u6807y:");    lbly.setFont(new Font("宋体", Font.PLAIN, 15));    lbly.setBounds(22, 68, 66, 31);    contentPanel.add(lbly);    value_x = new JLabel("0");    value_x.setForeground(Color.BLUE);    value_x.setFont(new Font("宋体", Font.PLAIN, 20));    value_x.setBounds(82, 27, 66, 31);    contentPanel.add(value_x);    value_y = new JLabel("0");    value_y.setForeground(Color.BLUE);    value_y.setFont(new Font("宋体", Font.PLAIN, 20));    value_y.setBounds(82, 68, 66, 31);    contentPanel.add(value_y);  }}