Adv Java Program : Write a java program in multithreading using applet for Digital watch

 Adv Java Program : Write a java program in multithreading using applet for Digital watch

clock.java

/*<applet code= "clock.class" height="600" width="600"></applet>*/

import java.applet.*;  

import java.awt.*;  

import java.util.*;  

import java.text.*;  

  

public class clock extends Applet implements Runnable {  

   Thread t1 = null;  

   int hours = 0, minutes = 0, seconds = 0;

   String time = "";

   

   public void init() {  

      setBackground( Color.green);  

   }  

   public void start() {

      t1 = new Thread( this );

      t1.start();

   } 

   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 d = cal.getTime();  

            time = formatter.format( d );

            

            repaint();  

            t1.sleep( 1000 ); 

         }  

      }  

      catch (Exception e) { }  

   } 

   public void paint( Graphics g ) {

      g.setColor( Color.blue );  

      g.drawString( time, 50, 50 );  

   }  

}  

run :

javac clock.java

appletviewer clock.java

output :