Question: If it is possible to call the attributes of the objects that are the ArrayList elements? HELP!!!

Question

I make the objects of my own class and want to organize them onto the ArrayList (System.Collections.ArrayList), but I cann't use methods and fields of my class objects when they become the elements of the ArrayList. It is possible when I organize the objects into the Array. For me the ArrayList is more suitable.
If it is possible to call the methods and fields of the selfmade class objects that are ArrayList elements?