Correct way to synchronize ArrayList in java

I'm not sure if this is the correct way to synchronize my ArrayList.

I have an ArrayList in_queue which is passed in from the registerInQueue function.

ArrayList<Record> in_queue = null;

public void registerInQueue(ArrayList in_queue)
{
    this.in_queue = in_queue;
}

Now I'm trying to synchronize it. Is this sychronizing my in_queue object correctly?

List<Record> in_queue_list = Collections.synchronizedList(in_queue);

synchronized (in_queue_list) {
    while (in_queue_list.size() > 0) {
        in_queue_list.remove(0);
    }
}