Java stopwatch ⏱️

java stopwatch program

#java #stopwatch #program

// ***************************************************
public class Main {

public static void main(String[] args) {

Stopwatch stopwatch = new Stopwatch();

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

public class Stopwatch implements ActionListener{

JFrame frame = new JFrame();
JButton startButton = new JButton("START");
JButton resetButton = new JButton("RESET");
JLabel timeLabel = new JLabel();
int elapsedTime = 0;
int seconds =0;
int minutes =0;
int hours =0;
boolean started = false;
String seconds_string = String.format("%02d", seconds);
String minutes_string = String.format("%02d", minutes);
String hours_string = String.format("%02d", hours);

Timer timer = new Timer(1000, new ActionListener() {

public void actionPerformed(ActionEvent e) {

elapsedTime=elapsedTime+1000;
hours = (elapsedTime/3600000);
minutes = (elapsedTime/60000) % 60;
seconds = (elapsedTime/1000) % 60;
seconds_string = String.format("%02d", seconds);
minutes_string = String.format("%02d", minutes);
hours_string = String.format("%02d", hours);
timeLabel.setText(hours_string+":"+minutes_string+":"+seconds_string);

}

});


Stopwatch(){

timeLabel.setText(hours_string+":"+minutes_string+":"+seconds_string);
timeLabel.setBounds(100,100,200,100);
timeLabel.setFont(new Font("Verdana",Font.PLAIN,35));
timeLabel.setBorder(BorderFactory.createBevelBorder(1));
timeLabel.setOpaque(true);
timeLabel.setHorizontalAlignment(JTextField.CENTER);

startButton.setBounds(100,200,100,50);
startButton.setFont(new Font("Ink Free",Font.PLAIN,20));
startButton.setFocusable(false);
startButton.addActionListener(this);

resetButton.setBounds(200,200,100,50);
resetButton.setFont(new Font("Ink Free",Font.PLAIN,20));
resetButton.setFocusable(false);
resetButton.addActionListener(this);

frame.add(startButton);
frame.add(resetButton);
frame.add(timeLabel);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(420,420);
frame.setLayout(null);
frame.setVisible(true);
}

@Override
public void actionPerformed(ActionEvent e) {

if(e.getSource()==startButton) {

if(started==false) {
started=true;
startButton.setText("STOP");
start();
}
else {
started=false;
startButton.setText("START");
stop();
}

}
if(e.getSource()==resetButton) {
started=false;
startButton.setText("START");
reset();
}

}

void start() {
timer.start();
}

void stop() {
timer.stop();
}

void reset() {
timer.stop();
elapsedTime=0;
seconds =0;
minutes=0;
hours=0;
seconds_string = String.format("%02d", seconds);
minutes_string = String.format("%02d", minutes);
hours_string = String.format("%02d", hours); timeLabel.setText(hours_string+":"+minutes_string+":"+seconds_string);
}

}