Ikk：新頁面: Given that Triangle implements Runnable, and:

31. void go() throws Exception{
32. Thread t = new Thread(new Triangle());
3...

2013-03-26T07:06:23Z

新頁面: Given that Triangle implements Runnable, and: 31. void go() throws Exception{ 32. Thread t = new Thread(new Triangle()); 3...

新頁面

Given that Triangle implements Runnable, and: 31.    void go() throws Exception{ 32.           Thread t = new Thread(new Triangle()); 33.           t.start(); 34.           for(int x=1; x<100000; x++){ 35.                         //insert code here 36.                       if(x%100 == 0) System.out.print("g"); 37.           }} 38.          public void run(){ 39.                        try{ 40.                                for(int x=1; x<100000; x++){ 41.                                               //insert the same code here 42.                                               if(x%100 == 0) System.out.print("t"); 43.                                    } 44.                        }catch(Exception e){} 45.    }

 Which two statements, inserted independently at both lines 35 and 41, tend to allow both threads to temporarily pause and allow the other thread to execute? (Choose two.)

 A. Thread.wait(); B. Thread.join(); C. Thread.yield(); D. Thread.sleep(1); E. Thread.notify();

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解答

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Ans: C D 

 解說:
在第35行和41行插入那二個程式敘述，可以使得二條執行暫時性地停止並允許其他執行緖可以執行？
 
 
         yield的退讓的意思，一旦下yield，立刻退出CPU，進入runable狀態。
 
        sleep是睡眠一段時間(也是離開CPU，但確保多少時間後才能進runable的狀態).。


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{{SCJP 1.6版考題講解}}

SCJP 1.6版考題 243 - 修訂歷史

Ikk：新頁面: Given that Triangle implements Runnable, and: 31. void go() throws Exception{32. Thread t = new Thread(new Triangle());3...

Ikk：新頁面: Given that Triangle implements Runnable, and:

31. void go() throws Exception{
32. Thread t = new Thread(new Triangle());
3...