Serial Execution of threads

[gamodg]

Hi

I have three threads

T1 prints 1 4 7 10...
T2 prints 2 5 8 11...
T3 prints 3 6 9 13...

I want to print 1 2 3 4 5 6 7 8 9 10 11 12.....

[Eranga]

Multiple thread not guaranteed by the thread pool that it'll executed in same order that you start.

[JosAH]

Hi

I have three threads

T1 prints 1 4 7 10...
T2 prints 2 5 8 11...
T3 prints 3 6 9 13...

I want to print 1 2 3 4 5 6 7 8 9 10 11 12.....

Just use a single thread that prints 1, 2, 3 etc. because otherwise you'll need quite a bit of synchronization and scheduling for effectively just executing one single thread.

kind regards,

Jos

[Dennis]

Maybe this helps:

public class threadClass
{
	int i=1;
	public threadClass()
	{
		Thread t1 = new Thread(run1);
		Thread t2 = new Thread(run2);
		Thread t3 = new Thread(run3);
		
		t1.start();
		t2.start();
		t3.start();
	}
	
	Runnable run1 = new Runnable(){
		public void run()
		{
			while(true)
			{
				if((i%3)==0){
					System.out.println("thread 1: " + i++);
				}
			}
		}
	};
	
	Runnable run2 = new Runnable(){
		public void run()
		{
			while(true)
			{
				if((i%3)==1){
					System.out.println("thread 2: " + i++);
				}
			}
		}
	};
	
	Runnable run3 = new Runnable(){
		public void run()
		{
			while(true)
			{
				if((i%3)==2){
					System.out.println("thread 3: " + i++);
				}
			}
		}
	};
	
	public static void main(String... args)
	{
		new threadClass();
	}
}

[Eranga]

Still the same, run your code for a long time. You can see the values a messup.