15.2.3. Key Methods

Try these first

1. 1.

   What method would you use to add a new element to a list?

   Hint

   Think about how you would append an item to the end.

2. 2.

   How would you access the first item in a list?

   Hint

   Remember indexes start at zero.

3. 3.

   Which method would you use to remove an element from a list?

   • add()
   • remove()
   • get()

   Hint

   Think about what action is represented by each method.

4. 4.

   True or False: The get method can retrieve any element in the list.

   • True
   • False

   Hint

   Consider the concept of accessing elements by index.

5. 5.

   Given an ArrayList of integers, write a method to find and replace all occurrences of a value with another value.

   Hint

   Think about how you'd loop through and access each element.

6. 6.

   Create a list of your five favorite books, then use the listIterator to print them in reverse order.

   Hint

   Remember how to initialize the listIterator and its methods.