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;

/**	Author: David D. Riley
 *		Date: Jan, 2005
 *   First prototype for the carterpillar program (Figure 3.23)
 */
public class Driver  {
    private  JFrame  theWindow;
    private  Oval  head, frontSegment, midSegment, rearSegment;

    public Driver()   {
        theWindow = new JFrame( "The Pede" );
        theWindow.setBounds(30, 30, 500, 250);
        theWindow.setLayout(null);
        theWindow.setVisible(true);
        head = new Oval( 110, 70, 84, 84 );
        theWindow.add(head, 0);
        frontSegment = new Oval( 180, 100, 50, 50 );
        theWindow.add(frontSegment, 0);
        midSegment = new Oval( 230, 100, 50, 50 );
        theWindow.add(midSegment, 0);
        rearSegment = new Oval( 280, 100, 50, 50 );
        theWindow.add(rearSegment, 0);
        theWindow.repaint();
    }
}