SCJP題庫第238題
Which two code fragments will execute the method doStuff() in a separate thread?
(Choose two.)
A. new Thread(){
public void run(){doStuff();}
};
B. new Thread(){
public void start(){doStuff();}
};
C new Thread(){
public void start(){doStuff();}
}.run();
D. new Thread(){
public void run(){doStuff();}
}.start();
E. new Thread(new Runnable(){
public void run(){doStuff();}
}).run();
F. new Thread(new Runnable(){
public void run(){doStuff();}
}).start();
Ans: DF
解說:題目要求那二個程式片段可以在一個分開的執行緒上執行doStuff方法。
執行緒的啟動是要呼叫start方法,若是以呼叫run來看,run方法是執行在main執行緒之上,不是分開的執行緒。
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