driver.java

Java程序设计(美) David D. Riley著 机械工业出版社 书籍配套 代码

import java.awt.Color;
import javax.swing.JFrame;

/** CheckerBoard Program  (Figure 12.27)
 *  Author: David Riley
 *  Date: January, 2005
 */
public class Driver  {
	private Rectangle[][] checkerboard;
	private JFrame window;
	private Oval whitePiece;

	public Driver()   {
		JFrame window = new JFrame("Checkboard");
		window.setBounds(100, 100, 160, 160);
		window.setVisible(true);
		window.setLayout(null);
		checkerboard = new Rectangle[8][8];
		for (int row=0; row!=checkerboard.length; row++)   {
			for (int col=0; col!=checkerboard[0].length; col++)   {
				checkerboard[row][col] = new Rectangle(col*20, row*20, 20, 20);
				if ((row+col) % 2 == 0)   {
					checkerboard[row][col].setBackground( Color.black );
				} else {
					checkerboard[row][col].setBackground( Color.red );
				}
				window.add( checkerboard[row][col], 0 );
			}
		}
		whitePiece = new Oval(2, 2, 16, 16);
		whitePiece.setBackground( Color.white );
		checkerboard[1][6].add(whitePiece, 0);
		window.repaint();
	}
}