java concurrent Array List access

Question

I have an object which is a singleton. This object declares:

List players = new ArrayList();

The same object al

Answer 1

If you don't plan on updating it often use a CopyOnWriteArrayList otherwise @tieTYT's suggestion works.

You can also manage this yourself by returning a copy of the list instead of the actual list within the getPlayers. (If you are using Collections.synchronizedList)

public List getPlayers(){
    synchronized(list){
       Collections.unmodifiableList(new ArrayList(list));
    }
}

This has the side effect of a list being out of date after an add/remove is done

Edit: Stealing Grzegorz suggestion for unmodifiableList