Q41
Predict the output: class A implements Runnable public void run() try for(int i=0;i<4;i++) Thread.sleep(100); System.out.println(Thread.currentThread().getName()); catch(InterruptedException e) public class Test public static void main(String argv[]) throws Exception A a = new A(); Thread t = new Thread(a, "A"); Thread t1 = new Thread(a, "B"); t.start(); t.join(); t1.start();
A.
A A A A B B B B
AnswerB.
A B A B A B A B
C.
Output order is not guaranteed
D.
Compilation succeed but Runtime Exception
E.
None of these
Answer: Option A
Solution
Answer: Option A
Solution:
t.join(); means Threat t must finish before Thread t1 starts.