public interface MessageStrategy {
        public void sendMessage();
}

public abstract class AbstractStrategyFactory {
        public abstract MessageStrategy createStrategy(MessageBody mb);
}

public class MessageBody {
        Object payload;
        public Object getPayload() { return payload; }
        public void configure(Object obj) { payload = obj; }
        public void send(MessageStrategy ms) {
                ms.sendMessage();
        }
}

public class DefaultFactory extends AbstractStrategyFactory {
        private DefaultFactory() {}
        static DefaultFactory instance;
        public static AbstractStrategyFactory getInstance() {
                if (null==instance) instance = new DefaultFactory();
                return instance;
        }
        public MessageStrategy createStrategy(final MessageBody mb) {
                return new MessageStrategy() {
                        MessageBody body = mb;
                        public void sendMessage() {
                                Object obj = body.getPayload();
                                System.out.println(obj.toString());
                        }
                };
        }
}
public class HelloWorld {
            public static void main(String[] args) {
                        MessageBody mb = new MessageBody();
                        mb.configure("Hello World!");
                        AbstractStrategyFactory asf = DefaultFactory.getInstance();
                        MessageStrategy strategy = asf.createStrategy(mb);
                        mb.send(strategy);
            }
}