APCS: AP Computer Science A @sfhs

This is an old revision of the document!

---

Checker Board

Make a checkerboard

CheckerBoard.java

import java.awt.Graphics2D;
import java.awt.Rectangle;
 
/**
   This class displays a checkerboard with squares,
   alternating between white and black.
*/
public class CheckerBoard
{
   /**
      Creates a CheckerBoard object with a given number of squares.
      @param aNumSquares the number of squares in each row
      @param aSize the size of each square
   */
   public CheckerBoard(int aNumSquares, int aSize)
   {
      numSquares = aNumSquares;
      size = aSize;
   }
 
   /**
      Method used to draw the checkerboard.
      @param g2 the graphics content
   */
   public void draw(Graphics2D g2)
   {
      // your code here
   }
 
   private int numSquares;
   private int size;
}

CheckerBoardComponent.java

import javax.swing.JComponent;
import java.awt.Graphics;
import java.awt.Graphics2D;
 
public class CheckerBoardComponent extends JComponent
{
   public void paintComponent(Graphics g)
   {
      Graphics2D g2 = (Graphics2D) g;
 
      final int NSQUARES = 8;
 
      int size = Math.min(getWidth(), getHeight()) / NSQUARES;
      CheckerBoard cb = new CheckerBoard(NSQUARES, size);
 
      cb.draw(g2);
   }
}