Question

I have two lists of type List<Integer[]>: A.Unassigned and A.Shanghai.

I tried the following:

Iterator<Integer[]> UnassignedIt = A.Unassigned.iterator();
A.Shanghai.add(UnassignedIt.next());
UnassignedIt.remove();

but it gives a NoSuchElementException:

java.util.NoSuchElementException at java.util.AbstractList$Itr.next(Unknown Source)

[How can I solve this?]

Answer 1

Check if the iterator has a next item before calling next():

Iterator<Integer[]> it = A.Unassigned.iterator();
while (it.hasNext()) {
    Integer intArray = it.next();
    A.Shanghai.add(intArray);
    it.remove();
}

Also, documentation might help a lot. And take the comments into account, the naming conventions, et cetera.