[問題] SCJP 6 題庫 243
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();
答案是C/D
但想問B的join不是也會讓目前running的執行緒進入Block狀態嗎?
為何不選呢?
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