Почему код не работает?

Question

Не работает код:
class MyClass implements Runnable {
public static void main(String[ ] args) {
Thread t = new Thread(new MyClass());
t.start();
}

public void run() {
System.out.println("Hello");
try { Thread.sleep(5000); }
catch (InterruptedException e) {
System.out.println("nooo!");
}
System.out.println("Hello");
}
}

Answer 1

It works. If you run in Sololearn, it can handle only maximum delay upto 2 seconds only.. due to limitation server execution time...
So check code by Thread.sleep(1000);

Answer 2

Yes. You have 2 outputs statements of hello print. That's why.. What is your expected output...?

Answer 3

How can you saying that..?

First one is you will get here.. Because there only single thread.....
But thread are executed depending on its available time.. It's not sequencial, revise the thread topic again once...

Answer 4

Add a output statement in try block before sleep then see it...
It works as you expecting, since there only single thread.... But the delay is only in seconds then, you can't see it...

When multiple treads are there, then when a thread is in sleeping or suspend state, then meanwhile other threads gets processor time and executed.. Previous thread goes into sleep.. Threads works like this, not exactly but a sample it is. So you can't see waiting in multiple threads., or sleep time is very less.. Run this in system with large delay then you can observe it clearly....

Answer 5

I tried. worked for 1 second, but not correctly. at first I waited 1 second and only then gave out two "Hello" at once

Answer 6

1) hello. 2) wait 1 second. 3) hello

Answer 7

I got: 1) wait 1 second. 2) hello. 3) hello.

Answer 8

Seriously? I did not know. thank! how can one make it come out 1) action. 2) waiting. 3) action.?