Analog clock in Applet

Analog clock can be created by using the Math class. Let's see the simple example:

Example of Analog clock in Applet:

import java.applet.*;
import java.awt.*;
import java.util.*;
import java.text.*;

public class MyClock extends Applet implements Runnable {

   int width, height;
   Thread t = null;
   boolean threadSuspended;
   int hours=0, minutes=0, seconds=0;
   String timeString = "";

   public void init() {
      width = getSize().width;
      height = getSize().height;
      setBackground( Color.black );
   }

   public void start() {
      if ( t == null ) {
         t = new Thread( this );
         t.setPriority( Thread.MIN_PRIORITY );
         threadSuspended = false;
         t.start();
      }
      else {
         if ( threadSuspended ) {
            threadSuspended = false;
            synchronized( this ) {
               notify();
            }
         }
      }
   }

   public void stop() {
      threadSuspended = 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", Locale.getDefault() );
            Date date = cal.getTime();
            timeString = formatter.format( date );

            // Now the thread checks to see if it should suspend itself
            if ( threadSuspended ) {
               synchronized( this ) {
                  while ( threadSuspended ) {
                     wait();
                  }
               }
            }
            repaint();
            t.sleep( 1000 );  // interval specified in milliseconds
         }
      }
      catch (Exception e) { }
   }

   void drawHand( double angle, int radius, Graphics g ) {
      angle -= 0.5 * Math.PI;
      int x = (int)( radius*Math.cos(angle) );
      int y = (int)( radius*Math.sin(angle) );
      g.drawLine( width/2, height/2, width/2 + x, height/2 + y );
   }

   void drawWedge( double angle, int radius, Graphics g ) {
      angle -= 0.5 * Math.PI;
      int x = (int)( radius*Math.cos(angle) );
      int y = (int)( radius*Math.sin(angle) );
      angle += 2*Math.PI/3;
      int x2 = (int)( 5*Math.cos(angle) );
      int y2 = (int)( 5*Math.sin(angle) );
      angle += 2*Math.PI/3;
      int x3 = (int)( 5*Math.cos(angle) );
      int y3 = (int)( 5*Math.sin(angle) );
      g.drawLine( width/2+x2, height/2+y2, width/2 + x, height/2 + y );
      g.drawLine( width/2+x3, height/2+y3, width/2 + x, height/2 + y );
      g.drawLine( width/2+x2, height/2+y2, width/2 + x3, height/2 + y3 );
   }

   public void paint( Graphics g ) {
      g.setColor( Color.gray );
      drawWedge( 2*Math.PI * hours / 12, width/5, g );
      drawWedge( 2*Math.PI * minutes / 60, width/3, g );
      drawHand( 2*Math.PI * seconds / 60, width/2, g );
      g.setColor( Color.white );
      g.drawString( timeString, 10, height-10 );
   }
}

myapplet.html

<html>
<body>
<applet code="MyClock.class" width="300" height="300">
</applet>
</body>
</html>

download this example.

Next TopicParameter In Applet

<<prev next>>

For Videos Join Our Youtube Channel: Join Now

Feedback

Send your Feedback to [email protected]

Help Others, Please Share

Learn Latest Tutorials

Splunk

SPSS

Swagger

Transact-SQL

Tumblr

ReactJS

Regex

Reinforcement Learning

R Programming

RxJS

React Native

Python Design Patterns

Python Pillow

Python Turtle

Keras

Preparation

Aptitude

Reasoning

Verbal Ability

Interview Questions

Company Questions

Trending Technologies

Artificial Intelligence

AWS

Selenium

Cloud Computing

Hadoop

ReactJS

Data Science

Angular 7

Blockchain

Git

Machine Learning

DevOps

B.Tech / MCA

DBMS

Data Structures

DAA

Operating System

Computer Network

Compiler Design

Computer Organization

Discrete Mathematics

Ethical Hacking

Computer Graphics

Software Engineering

Web Technology

Cyber Security

Automata

C Programming

C++

Java

.Net

Python

Programs

Control System

Data Mining

Data Warehouse

^{Like/Subscribe us for latest updates or newsletter}

Java Applet