[an error occurred while processing this directive]

Features

Technology
  Tech. Home
  GPS
  OSI
  WiMAX
  VoIP
  WiFi
  HSDPA
  LBS
  Vehicle Tracking
  SCADA
  Tech. What is?
Jobs At RoseIndia.net!
 
Join For Newsletter

Powered by groups.yahoo.com
Visit Group! Post Questions!

Line Animation in Java

                         

In this example we are creating an animated line. The color of  line is changing alternatively.

We use drawLine() to draw a line and setColor() method to set the color of the line. We pass four values in drawLine() method in which three  last values are fixed while value of  first x  is changing. The rang of the value is -500 to 600. The color of the line is changing by setColor() method. To remove old color and set new one or  in other words to refresh the color of line we are using repaint() method. To display the output we are creating new html files in which we are calling the .class file (of the source file) by using applet tag. We define the height and width of the window for output.

Here is the code of the program :

import java.awt.*;
import java.applet.*;
import javax.swing.*;
import java.awt.*;
public class AnimationLine extends JApplet
{     
     public void init() 
     {
     getContentPane().add(new AnimationLinePanel())
     setSize(800,500);
     }
     public class AnimationLinePanel extends JPanel
     {
     int linex,linem = 1
     public AnimationLinePanel()
     {
     setBackground(Color.black)
     }
     public void paintComponent(Graphics page)
     {
     super.paintComponent(page);
     page.setColor(Color.red)
     page.drawLine(linem,200,310,400)
     if(linex > 500)
   {
     linem = -500;
   page.setColor(Color.green)
   page.drawLine(linem,200,310,400);             
   }
     if(linex < 0)
   {
     linem = 600;
   page.setColor(Color.yellow)
   page.drawLine(linem,200,310,400);         
   }
     linex += linem; 
     repaint()
     }
     }

<html>
<body>
<APPLET ALIGN=
"CENTER" CODE="AnimationLine.class" 
WIDTH=
"800" HEIGHT="500">
</APPLET>
</body>
</html>

OutPut of The Example:

Download this example.

Download this example.

                         

[an error occurred while processing this directive]