1    package bookExamples.ch12Nested; 
2     
3    import java.awt.Graphics; 
4     
5    /** 
6     * DocJava, Inc. 
7     * http://www.docjava.com 
8     * Programmer: dlyon 
9     * Date: Oct 4, 2004 
10    * Time: 3:19:20 PM 
11    */ 
12   public abstract class Shape { 
13       private int x; 
14       private int y; 
15       Shape(int x, int y) { 
16           this.x  = x; 
17           this.y = y; 
18       } 
19       public abstract void draw(Graphics g); 
20       // getCircle makes an instance - factory pattern 
21       // Using an anonymous local inner class.... 
22       public static Shape getCircle(final int x, final int y, final int r) { 
23           return new Shape(x,y) { 
24               public void draw(Graphics g) { 
25                  g.drawOval(x,y,2*r,2*r); 
26               } 
27           }; 
28       } 
29         public static Shape getOval(int x, int y, final int w, final int h) { 
30           return new Oval(x, y, w, h); 
31       } 
32    
33       public int getX() { 
34           return x; 
35       } 
36    
37       public void setX(int x) { 
38           this.x = x; 
39       } 
40    
41       public int getY() { 
42           return y; 
43       } 
44    
45       public void setY(int y) { 
46           this.y = y; 
47       } 
48    
49       // Named static inner class 
50       private static class Oval extends Shape { 
51           private final int w; 
52           private final int h; 
53    
54           public Oval(int x, int y, int w, int h) { 
55               super(x, y); 
56               this.w = w; 
57               this.h = h; 
58           } 
59    
60           public void draw(Graphics g) { 
61              g.drawOval(getX(),getY(),w,h); 
62    
63           } 
64       } 
65   } 
66