Your project must work towards a single cohesive goal

Your code must have the following: ? At least 1 interface. The interface must have abstract methods. ? At least 1 ArrayList or multidimensional array. You must iterate over some region of this using loops. ? At least 2 classes extend another class that you define. At least one method is overridden and called. ? At least 1 class implements an interface that you define. The code items above must somehow assist in achieving your goal.