Hello world!

The following demonstrates the use  of the OverkillPattern:

Hello World

1. public interface MessageStrategy
2. {
3.    public void sendMessage();
4. }
5.  
6. public abstract class AbstractStrategyFactory
7. {
8.    public abstract MessageStrategy createStrategy(MessageBody mb);
9. }
10.  
11. public class MessageBody
12. {
13.    Object payload;
14.  
15.    public Object getPayload()
16.    {
17.       return payload;
18.    }
19.  
20.    public void configure(Object obj)
21.    {
22.       payload = obj;
23.    }
24.  
25.    public void send(MessageStrategy ms)
26.    {
27.       ms.sendMessage();
28.    }
29. }
30.  
31. public class DefaultFactory extends AbstractStrategyFactory
32. {
33.    private DefaultFactory()
34.    {}
35.  
36.    static DefaultFactory instance;
37.  
38.    public static AbstractStrategyFactory getInstance()
39.    {
40.       if (null==instance) instance = new DefaultFactory();
41.       return instance;
42.    }
43.  
44.    public MessageStrategy createStrategy(final MessageBody mb)
45.    {
46.       return new MessageStrategy()
47.       {
48.          MessageBody body = mb;
49.          public void sendMessage()
50.          {
51.             Object obj = body.getPayload();
52.             System.out.println((String)obj);
53.          }
54.       };
55.    }
56. }
57.  
58. public class HelloWorld
59. {
60.    public static void main(String[] args)
61.    {
62.       MessageBody mb = new MessageBody();
63.       mb.configure("Hello World!");
64.  
65.       AbstractStrategyFactory asf = DefaultFactory.getInstance();
66.       MessageStrategy strategy = asf.createStrategy(mb);
67.  
68.       mb.send(strategy);
69.    }
70. }

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