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I like that way. I'll have to use that in the future.

The method returned either an ArrayList<Integer> or an ArrayList<Long>, depending on what was given to it. So since it could return either, it returned ArrayList<Object>. I needed to cast those...

How can I convert an Object to a Long?

I have a method that returns an ArrayList of either Integer Objects or Long Objects, so it returns just an ArrayList of Objects. I need to convert those...