Java设计模式之装饰者模式

 1 package 装饰模式;
 2 
 3 public interface IBread {
 4 
 5     public void prepair();
 6     
 7     public void kneadFlour();
 8     
 9     public void steamed();
10     
11     public void process();
12 }

 1 package 装饰模式;
 2 
 3 public class NormalBread implements IBread{
 4 
 5     @Override
 6     public void prepair() {
 7         
 8         System.out.println("准备面粉,水以及发酵粉...");
 9     }
10 
11     @Override
12     public void kneadFlour() {
13         
14         System.out.println("和面...");
15     }
16 
17     @Override
18     public void steamed() {
19 
20         System.out.println("蒸馒头...香喷喷的馒头出炉了");
21     }
22 
23     @Override
24     public void process() {
25 
26         prepair();
27         kneadFlour();
28         steamed();
29     }
30 
31 }

 1 package 装饰模式;
 2 
 3 public abstract class AbstractBread implements IBread {
 4 
 5     private final IBread bread;
 6     
 7     public AbstractBread(IBread bread) {
 8         super();
 9         this.bread = bread;
10     }
11     @Override
12     public void prepair() {
13         this.bread.prepair();
14     }
15     @Override
16     public void kneadFlour() {
17         this.bread.kneadFlour();
18     }
19     @Override
20     public void steamed() {
21         this.bread.steamed();
22     }
23 
24     @Override
25     public void process() {
26         prepair();
27         kneadFlour();
28         steamed();
29     }
30 
31 }

 1 package 装饰模式;
 2 
 3 public class SweetDecorator extends AbstractBread {
 4 
 5     public SweetDecorator(IBread bread) {
 6         
 7         super(bread);
 8     }
 9 
10     public void paint(){
11         
12         System.out.println("添加甜蜜素...");
13     }
14     
15     @Override
16     public void kneadFlour() {
17         //添加甜蜜素后和面
18         this.paint();
19         super.kneadFlour();
20     }
21     
22 }