Referring To Object That Has Not Yet Been Made?

I am trying to make a for loop using an iterator that refers to an object of a class that hasnt been made yet. The class is called MyArrayList but it does not have a Main. A MyArrayList object is made externally so I am unsure how to refer it to the object from within the class. Is there a place holder I could use such as Object.Iterator() or something similar. I have created an inner class that implements the Iterator interface. Here is the code that I need to adjust to do this:

public class ListIterator<E> implements Iterator<E> {
public myIterator() {
Iterator it = MyArrayList.iterator();
while (it.hasNext()) {
System.out.println(it.next());
}
}
}