檢視 SCJP 1.6版考題 036 的原始碼

 public class Doubler{
      public static int doubleMe(Holder h){
         return h.getAmount() * 2;
      }
 }
 and:
 public class Holder {
   int amount = 10;
   public void doubleAmount(){amount = Doubler.doubleMe(this);}
   public in getAmount(){return amount;}
   //more code here
 }
 Place the code framgmets in position to reduce the coupling between Doubler and Holder.
 public class Doubler{  
 
   public static int doubleMe( Place here h){
     return Place here * 2;
   }
 }
 public class Holder {
   int amount = 10;
   public void doubleAmount(){
     amount = Doubler.doubleMe( Place here );
   }
   public in getAmount(){return amount;}
   //more code here
 }
 
 
 void 
 Holder
 int
 Doubler
 h.getAmount()
 h
 this
 amount 



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<span style="font-size:medium;">解答</span>

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<span style="font-size: medium;">Ans: int    ,    h ,       amount   </span>

<span style="font-size:medium;"> 解說:
 修改程式使得Doubler與Holder二個類別的耦合性降低 
 
 Dobuler被改成不使用到Holder類別，導致Holder的變更將不影響到Doubler類別。

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{{SCJP 1.6版考題講解}}