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


/*
 * 时间显示类
 */

@SuppressWarnings("serial")
public class MyTimer extends JPanel
{
       protected int usedTime = 0;//定义初始时间为0
        public Timer timer;
        public JLabel usedTimeLabel = new JLabel("用时：");
        public JTextField timeText = new JTextField(5);
        protected  MyTimer()
        {
                timeText.setEditable(false);
                timeText.setText("0分0秒");
                setVisible(true);
                timer = new Timer(1000,new TimerListener());
        }
        class TimerListener implements ActionListener//时间显示监听
        {           
                public void actionPerformed(ActionEvent e)
                {
                        usedTime++;
                        timeText.setText(usedTime/60+"分"+usedTime%60+"秒"); //显示所用时间,分秒                       
                }
        }

}