I have one class that holds an ArrayList of an abstract class. Two different classes extend this abstract class. I fill the array with either one or the other of the two. The problem is, in an outside class when I set a reference to the object that contains the class holding the ArrayList, I cant access any instance variables from it.
If I check the ArrayList's size the size is holding the correct value, but displays null when I print out a value..
gives me null.. but it holds a value..
How do I access the values out of the ArrayList from another class properly?
Exactly as you are doing; it doesn't sound to me like that's your problem. The fact is that answer is null, not the ArrayList entry.
However, one tip I would give you is that stringing lots of derefs ('.') together can make things difficult to follow, so why not just break them up? viz:It may seem like a lot more code, but it'll help an awful lot in debugging.
Isn't it funny how there's always time and money enough to do it WRONG?
Artlicles by Winston can be found here
Joined: Feb 19, 2012
Thanks for the response Winston; I tried it the way you suggested and I still get a null print.. Guess I will just have to keep playing around with it.