Ikk：新頁面:
Which three will compile and run without exception? (Choose three.) A. private synchronized Object o;
B. void go(){
&...

2013-03-27T16:34:05Z

新頁面: Which three will compile and run without exception? (Choose three.) A. private synchronized Object o; B. void go(){ &...

新頁面

Which three will compile and run without exception? (Choose three.)   

   A. private synchronized Object o;
    B. void go(){                 synchronized(){/* code here */}
   C. public synchronized void go(){/* code here */}   D. private synchronized(this) void go(){/* code here */}
   E. void go(){                 synchronized(Object.class){/* code here */}
   F. void go(){                Object o = new Object();                 synchronized(o){/* code here */}

 
 
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解答

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Ans: CEF 

 解說:
此題問那三個將會編繹與無例外的執行？同步關鍵字synchronized可以對整個方法做同步，
        如C，也可以對一個區塊的程式做同步，
       如E/F (要指定要取得的那個物件的lock) 
 註：E應該是錯的，在Object類別中並沒有class這個變數，有可能這題在流傳時，出了一些問題，但，回答時還是以給的答案回。


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{{SCJP 1.6版考題講解}}

SCJP 1.6版考題 228 - 修訂歷史

Ikk：新頁面: Which three will compile and run without exception? (Choose three.) A. private synchronized Object o; B. void go(){ &...

Ikk：新頁面:
Which three will compile and run without exception? (Choose three.) A. private synchronized Object o;
B. void go(){
&...