Master exam Thread question

[Biby Thoms]

I am always getting Stimpy 100 times for all excution.

But exam reference saying the output for the following question is Ren Ren Ren...Stimpy Stimpy Stimpy

    
public class ThreadTest {
class InnerRun implements Runnable {
public void run() {
for (int x=0;x<100;x++) {
try {
Thread.sleep(5);
}
catch (Exception e) {}
System.out.println("Ren");
}
}
}
 
class InnerRunTwo implements Runnable {
Thread other;
InnerRunTwo(Thread t) {other=t;}
public void run() {
try {
other.join();
}
catch (Exception e) {}
for (int x=0;x<100;x++) {
try {
Thread.sleep(5);
}
catch (Exception e){}
System.out.println("Stimpy");
}
}
}
void start() {
InnerRun ir = new InnerRun();
Thread t = new Thread();
InnerRunTwo irr = new InnerRunTwo(t);
Thread u = new Thread(irr);
t.start();
u.start();
}
public static void main(String[] args) {
ThreadTest tt = new ThreadTest();
tt.start();
}
}

[Zhu Ho]

The thread for InnerRun never start so it won't be run. So only InnerRunTwo is run.

[Shailesh Kumar]

Are you sure if it wasn't like this?


InnerRun ir = new InnerRun();
Thread t = new Thread(ir);//ir is passed here in the constructor


May be a printing mistake.

[Dave Reinhardt]

Unless this is a possible answer, I think there is a bug in the following code sample:

void start() {
InnerRun ir = new InnerRun();
Thread t = new Thread(ir); //wasn't passed the runnable ir
InnerRunTwo irr = new InnerRunTwo(t);
Thread uu = new Thread(irr);
t.start();
uu.start();
}

If you make this change then you will get 100 Ren and then 100 Stimpy. As it was in the original code, the thead t wasn't given a job(a runnable) to do.

[Biby Thoms]

You are correct Shail...Good catch. Thank you all