concurrentmodificationexception fix

1//Occurs when trying to remove an element from a Collection
2//while iterating over it
3
4//Where removal takes place
5//Setup an iterator
6Iterator<Thing> iter = things.iterator();
7//Iterate over collection
8while(iter.hasNext()) {
9	Thing thing = iter.next();
10	if (/* Some Condition that initiates removal */) {
11      //Remove using iterator
12      iter.remove();
13    }
14}
15//Avoids ConcurrentModificationException