Threading - t.Join() - What does it do exactly?

Question

Hello

 

I am deepening my understanding of the c# language and trying to really understand all the little details.

I have the following code in wish i cannot understand the difference in using t.Join() .

Can anyone help me ?

using System;
using System.Threading;

namespace _70483
{
    public static class Program
    {
        public static void ThreadMethod()
        {
            for (int i = 0; i<10; i++)
            {
                Console.WriteLine("ThreadProc: {0}", i);
                Thread.Sleep(0);
            }
        }
        static void Main(string[] args)
        {
            Thread t = new Thread(new ThreadStart (ThreadMethod));
            t.Start();

            for (int i = 0; i< 4 ; i++)
            {
                Console.WriteLine("Main thread: Do some work.");
                Thread.Sleep(0);
            }
            t.Join(); // Method is called on the main thread to let it wait until the other thread fnishes.
            Console.ReadLine();
        }

    }
}

I have tryed to remove it and cannot see any difference.

Is it maybe because i have Thread.Sleep(0) ?

 

Best regards

Rui