It sounds like you might be looking for something more like an ArrayList.
Import it from the until package:
You can declare an ArrayList of Strings like this:
ArrayList<String> myList = new ArrayList<String>();
From there, you can add and remove objects as you need. Using the respective ArrayList#add(E e) and ArrayList#remove(int index) methods.
Also, I wrote an implementation of it if you would like to see how it works behind the scenes.