Circle Programming
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import java.awt.*;
class circle extends Frame
{
public circle(){
setTitle("Circle");
setSize(520,480);
setVisible(true);
}
public void paint(Graphics g){
//a=position,b=width,height.
int a,b;
for (a=50,b=400;a<400;a+=10,b-=20){
if((a/10)%2==1){
g.setColor(Color.white);
g.fillOval(a,a,b,b);
}
else{
g.setColor(Color.black);
g.fillOval(a,a,b,b);
}
}
}
public static void main(String args[]){
new circle();
}
}