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
 *   Second prototype for the carterpillar program (Figure 3.26)
 */
public class Driver  {
    private  JFrame  theWindow;
    private  Oval  head, frontSegment, midSegment, rearSegment;
    private  Oval face, leftEye, rightEye, mouth;
    private  Rectangle  frontLeg;

    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);
        face = new Oval(2, 2, 80, 80);
        face.setBackground(Color.white);
        head.add(face, 0);
        leftEye = new Oval(15, 30, 15, 10);
        leftEye. setBackground (Color.blue);
        face.add(leftEye, 0);
        rightEye = new Oval(50, 30, 15, 10);
        rightEye. setBackground (Color.blue);
        face.add(rightEye, 0);
        mouth = new Oval(25, 50, 30, 10);
        face.add(mouth, 0);
        mouth. setBackground (Color.red);
        frontSegment = new Oval( 180, 100, 50, 50 );
        theWindow.add(frontSegment, 0);
        frontLeg = new Rectangle(200, 150, 10, 20);
        theWindow.add(frontLeg, 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();
    }
}