Digital clock

import javax.swing.;
import java.awt.;
import java.text.;
import java.util.;
public class DigitalWatch implements Runnable{
JFrame f;
Thread t=null;
int hours=0, minutes=0, seconds=0;
String timeString = "";
JButton b;

DigitalWatch(){
f=new JFrame();

t = new Thread(this);  
    t.start();  

b=new JButton();  
    b.setBounds(100,100,100,50);  

f.add(b);  
f.setSize(300,400);  
f.setLayout(null);  
f.setVisible(true);  

}

public void run() {
try {
while (true) {

        Calendar cal = Calendar.getInstance();  
        hours = cal.get( Calendar.HOUR_OF_DAY );  
        if ( hours > 12 ) hours -= 12;  
        minutes = cal.get( Calendar.MINUTE );  
        seconds = cal.get( Calendar.SECOND );  

        SimpleDateFormat formatter = new SimpleDateFormat("hh:mm:ss");  
        Date date = cal.getTime();  
        timeString = formatter.format( date );  

        printTime();  

        t.sleep( 1000 );  // interval given in milliseconds  
     }  
  }  
  catch (Exception e) { }  

}

public void printTime(){
b.setText(timeString);
}

public static void main(String[] args) {
new DigitalWatch();

}
}

Built With

• java