Hypothesize the output from the following code, and then test your hypothesis with a main method that includes the code: ArrayList letters = new ArrayList(); letters.add(""); letters.add (1, "1"); letters.add("e"); letters.add (1,""; letters.add("e"); letters.add (4,"z"); System.out.println (letters); letters.remove(""); int index = letters.indexOf("e"); letters.remove (index); letters.add (2,"0"); System.out.println (letters)