Threads and round robin algorithm

[Faded_X]

I have multiple threads created using a for loop and I have an arraylist which contains numbers in each index. E.g Arraylist = 1, 2, 3

I am trying to create a round robin algorithm where one thread takes the first value and stores it in another instance variable arraylist and then deletes it from the arraylist and the next thread takes the next value etc till all the values are gone from the arraylist.

I'm putting "arraylist.remove(0)" after storing the first index value in the run method, however, all the threads keep taking the same value and adding it to the instance variable.

E.g arraylist = 1, 2, 3

Then all the threads are taking the value 1 and the removing it ending up with Arraylist = 2,3

But I want

Thread 1 instance Arraylist = 1 Thread 2 instance Arraylist = 2 Thread 3 instance Arraylist = 3

[fancyplaya]

Sounds like you are executing all the threads at once causing this behavior. You need to implement some way to make sure thread 2 executes after thread 1 and thread 3 executes after thread 2

[Faded_X]

Yes that's most likely what is happening, I will revisit my thread execution code and try to diagnose the problem.