Line Animation in Java

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

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.

Line Animation in Java

Line Animation in Java

Line Animation in Java

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