Digital clock in Applet
Digital clock can be created by
using the Calendar and SimpleDateFormat class. Let's see the simple example:
Example
of Digital clock in Applet:
1. import java.applet.*;
2. import java.awt.*;
3. import java.util.*;
4. import java.text.*;
5.
6. public class DigitalClock extends Applet implements Runnable {
7.
8. Thread t = null;
9. int hours=0, minutes=0, seconds=0;
10. String timeString = "";
11.
12. public void init() {
13. setBackground( Color.green);
14. }
15.
16. public void start() {
17. t = new Thread( this );
18. t.start();
19. }
20.
21.
22. public void run() {
23. try {
24. while (true) {
25.
26. Calendar cal = Calendar.getInstance();
27. hours = cal.get( Calendar.HOUR_OF_DAY );
28. if ( hours > 12 ) hours -= 12;
29. minutes = cal.get( Calendar.MINUTE );
30. seconds = cal.get( Calendar.SECOND );
31.
32. SimpleDateFormat formatter = new SimpleDateFormat("hh:mm:ss");
33. Date date = cal.getTime();
34. timeString = formatter.format( date );
35.
36. repaint();
37. t.sleep( 1000 ); // interval given in milliseconds
38. }
39. }
40. catch (Exception e) { }
41. }
42.
43.
44. public void paint( Graphics g ) {
45. g.setColor( Color.blue );
46. g.drawString( timeString, 50, 50 );
47. }
48. }
|
In
the above example, getX() and getY() method of MouseEvent is used to get the
current x-axis and y-axis. The getGraphics() method of Component class
returns the object of Graphics.
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myapplet.html
1. <html>
2. <body>
3. <applet code="DigitalClock.class" width="300" height="300">
4. </applet>
5. </body>
6. </html>
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