Subgoals

Set up a one-dimensional dynamic list (initially empty or with a specified initial capacity)

Upon instantiation, an ArrayList contains zero elements initially, but elements can be added dynamically using add(). Elements not yet added do not exist until explicitly inserted.

Evaluate expression within get(index) which will be the index for the element to be accessed

arrayListName.get(index) returns the value stored at that index

index must be between 0 and arrayListName.size() - 1, inclusive; otherwise IndexOutOfBoundsException occurs

Evaluate expression within set(index, value) which will be the index for the element to be replaced

arrayListName.set(index, value) replaces the element at index with the specified value

(remember the assignment subgoals for verifying data types and evaluating expressions)

(remember rules for index values)

Passing as argument - a copy of the reference to the instantiated ArrayList is passed to the method. This means that any changes made to the elements inside the method persist outside the method. The exception is if the argument is assigned to reference a different ArrayList inside the method.

Assignment - changes the reference to point to the ArrayList on the right-hand side of the assignment operator.