lineup.java

java源程序 对初学者有很大的帮助 从简单到复杂

//********************************************************************
//  LineUp.java       Author: Lewis/Loftus
//
//  Demonstrates the use of a graphical object.
//********************************************************************

import java.util.Random;
import java.applet.Applet;
import java.awt.*;

public class LineUp extends Applet
{
   private final int APPLET_WIDTH = 400;
   private final int APPLET_HEIGHT = 150;
   private final int HEIGHT_MIN = 100;
   private final int VARIANCE = 40;

   private StickFigure figure1, figure2, figure3, figure4;

   //-----------------------------------------------------------------
   //  Creates several stick figures with varying characteristics.
   //-----------------------------------------------------------------
   public void init ()
   {
      int h1, h2, h3, h4;  // heights of stick figures
      Random generator = new Random();

      h1 = HEIGHT_MIN + generator.nextInt(VARIANCE);
      h2 = HEIGHT_MIN + generator.nextInt(VARIANCE);
      h3 = HEIGHT_MIN + generator.nextInt(VARIANCE);
      h4 = HEIGHT_MIN + generator.nextInt(VARIANCE);

      figure1 = new StickFigure (100, 150, Color.red, h1);
      figure2 = new StickFigure (150, 150, Color.cyan, h2);
      figure3 = new StickFigure (200, 150, Color.green, h3);
      figure4 = new StickFigure (250, 150, Color.yellow, h4);

      setBackground (Color.black);
      setSize (APPLET_WIDTH, APPLET_HEIGHT);
   }

   //-----------------------------------------------------------------
   //  Paints the stick figures on the applet.
   //-----------------------------------------------------------------
   public void paint (Graphics page)
   {
      figure1.draw (page);
      figure2.draw (page);
      figure3.draw (page);
      figure4.draw (page);
   }
}