What is wrong here? I get a java.lang.ClassCastException error but I can't see where I have gone wrong

Question

This is the first time I have really used Lists and Queues so this might be a very simple mistake. Is it because my queue is full of objects that can\'t be cast to integers?

Answer 1

You really should use Generics and ArrayList/ArrayDeque unless it's really performance critical and you use a lot of atomic types like int. Then you should have a look at http://labs.carrotsearch.com/hppc.html