Alternative to instanceof?

Question

I\'ve heard that it is bad design to use instanceof or equivalent (http://www.javapractices.com/topic/TopicAction.do?Id=31, when should we use instanceof and when not) which

Answer 1

Well, have you considered iterating over all of the tanks to see if they're in range instead of all of the entities in range to see if they're tanks? Seems like it would save you a lot of time on both iteration and instanceof calls...