使用JAVA绘制饼图

作者：blackwhites
email: blackwhites@sohu.com
日期：2000-10-11 15:06:31

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

 public class Graph extends Applet {
  int    depth, radius;

 public void init() {
   float value;
   String at = getParameter("width");
   radius = (at != null) ?  Integer.valueOf(at).intValue() : 100;
   at = getParameter("depth");
   depth = (at != null) ? Integer.valueOf(at).intValue() : 20;
   at = getParameter("values");
   PieChartCanvas c = new PieChartCanvas(radius, depth);
   setLayout(new BorderLayout());

   // Create Hashtable to map color name (String) to Color type
   Hashtable colors = new Hashtable();
   colors.put("green", Color.green);
   colors.put("red", Color.red);
   colors.put("blue", Color.blue);
   colors.put("yellow", Color.yellow);
   colors.put("magenta", Color.magenta);
   colors.put("cyan", Color.cyan);
   colors.put("orange", Color.orange);