Struggling in creating chessboard!!

Hey,I wanna create chessboard(only) without swings as i am a new programmer.Plz see this and say wats wrong with this code and necessary corrections


import java.awt.*;
import java.applet.*;

public class board2 extends Applet
{

int i=0,j=0,a=0;


public void init()
{

for(i=150;i<550;i+=50)//coordinates
{
for(j=50;j<=450;j+=50)//coordinates
{

a++;

repaint();




}

}

}


public void paint(Graphics g)

{




if((a%2)==0)

{


g.setColor(Color.lightGray);

g.fillRect(i,j,50,50);
g.drawRect(i,j,50,50);
}


if((a%2)==1)
{

g.setColor(Color.black);

g.fillRect(i,j,50,50);

g.drawRect(i,j,50,50);

}
}
}

First question: Do you get any errors when you compile the program?
If so, copy and post them.
If the program compiles OK, do you get any errors when you execute it?
See above.
Is the output what you want? If not, copy what it outputs and add comments describing what you want to change.

Also you could add some comments to the code describing what each method is to do. Writing comments will help you think thru the logic while you write the program.

Good luck.