GUI Timer

import java.awt.BorderLayout;

import java.awt.EventQueue;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.Timer;

import javax.swing.border.EmptyBorder;

import javax.swing.SwingConstants;

import java.awt.Font;

import java.awt.Color;

public class TimerSample1 extends JFrame {

private JPanel contentPane;

// timer inits

private JLabel label = new JLabel("00:00");

private static int minutes = 0, seconds = 0, milliseconds = 0;

private static Calendar date = Calendar.getInstance();

private static SimpleDateFormat sdf = new SimpleDateFormat("mm:ss");

private Timer timer;

// end of timer inits

/**

* Launch the application.

*/

public static void main(String[] args) {

EventQueue.invokeLater(new Runnable() {

public void run() {

try {

TimerSample1 frame = new TimerSample1();

frame.setVisible(true);

} catch (Exception e) {

e.printStackTrace();

}

}

});

}

/**

* Create the frame.

*/

public TimerSample1() {

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 lblNewLabel = new JLabel("00:00:00");

lblNewLabel.setForeground(Color.RED);

lblNewLabel.setFont(new Font("Lucida Grande", Font.PLAIN, 18));

lblNewLabel.setHorizontalAlignment(SwingConstants.CENTER);

lblNewLabel.setBounds(34, 23, 92, 32);

contentPane.add(lblNewLabel);

ActionListener timerListener = new ActionListener() {

public void actionPerformed(ActionEvent evt) {

++milliseconds;

if (milliseconds >= 600) {

++seconds;

milliseconds = 0;

}

if (seconds >= 60) {

++minutes;

seconds = 0;

}

if (minutes == 1) {

timer.stop();

minutes = 0;

seconds = 0;

milliseconds = 0;

}

date.set(Calendar.SECOND, seconds);

date.set(Calendar.MINUTE, minutes);

lblNewLabel.setText(sdf.format(date.getTime()));

}

};

timer = new Timer(1, timerListener);

timer.start();

}

}