第243題

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：CD

參考：13-2 Java執行緒與Thread類別、13-3 Runnable介面