将Facade装饰模式的代码由C#转为JAVA

 1 class Stock
 2 {
 3     public void Sell()
 4     {
 5         System.out.println("Sell Stock");
 6     }
 7     public void Buy()
 8     {
 9         System.out.println("Buy Stock");
10     }
11 }
12 
13 class NationDebt
14 {
15     public void Sell()
16     {
17         System.out.println("Sell NationDebt");
18     }
19     public void Buy()
20     {
21         System.out.println("Buy NationDebt");
22     }
23 }
24 
25 class Realty
26 {
27     public void Sell()
28     {
29         System.out.println("Sell Realty");
30     }
31     public void Buy()
32     {
33         System.out.println("Buy Realty");
34     }
35 }
36 
37 class Fund
38 {
39     Stock st;
40     NationDebt nd;
41     Realty re;
42     
43     public Fund()
44     {
45         st = new Stock();
46         nd = new NationDebt();
47         re = new Realty();
48     }
49     
50     public void BuyFund()
51     {
52         st.Buy();
53         nd.Buy();
54         re.Buy();
55     }
56     public void SellFund()
57     {
58         st.Sell();
59         nd.Sell();
60         re.Sell();
61     }
62 }
63 class ArrayApp
64    {
65     
66    public static void main(String[] args)
67       {
68        Fund fd = new Fund();
69        fd.BuyFund();
70        System.out.println("========");
71        fd.SellFund();
72   
73       }  
74    }