Java program(applet) to draw concentric circle

Java program(applet) to draw concentric circle 

Program:

import java.applet.*;

import java.awt.*;

import java.lang.*;

/*<applet code="code" height=800 width=700>

</applet> */

public class code extends Applet

 {

public void init()

   {

}

public void paint(Graphics g)

 {

   

setBackground(Color.lightGray );

int rad=40;                  //radius of circle

                 int dia=rad*2; //diameter

for(int i=0;i<3;i++)

                     {

       g.drawOval(300-(i*rad),300-(i*rad),50+(i*dia),50+(i*dia));

                    }

 }

}

Output:- 

Description:

to draw a circle in java applet we use a function 

drawOval(int x,int y,int h,int w)

x,y are the coordinates

h height of oval

w is width of oval

to draw a circle h,w must be equal