Checkerboard

import java.util.Scanner;
import org.kussmaul.simplegraphics.*;
import org.kussmaul.simplegraphics.item.SimpleItem;

public class Question1
{

    static int test[][] = {{0,0}, {1,0}, {2,0}, {0,1}, {0,2}, {0,3}};

    Scanner scan = new Scanner(System.in);
    static SimpleGraphics sg = new SimpleGraphics();
    static SimpleItem square;
    static SimpleItem circle;

    public static void main(String[] args)
    {
        drawBoard();
        drawCheckers(test);
    }

    public static void drawBoard()
    {
        for (int i = 0; i < 800; i += 100)
        {
            for (int j = 0; j < 800; j += 100)
            {
                square = sg.drawRect(i, j, 100);
            }
        }
    }

    public static void drawCheckers(int[][] positions)
    {
        for (int[] yx : positions)
        {
            if (yx[0] % 2 != yx[1] % 2)
            {
                circle = sg.drawOval((yx[0] * 100) + 20, (yx[1] * 100) + 20, 60);
            }
            else
            {
                circle = sg.fillOval((yx[0] * 100) + 20, (yx[1] * 100) + 20, 60);
            }
        }
    }
}