15.2.2.1. ArrayList

Try these first

1. 1.

   What method would you use to retrieve an element from an ArrayList?

   Hint

   Think about how you access items in a list.

2. 2.

   How do you add an element to an ArrayList?

   Hint

   This method allows you to increase the size of the list.

3. 3.

   Which method would you use to add an element to an ArrayList?

   • add()
   • insert()
   • append()
   • push()

   Hint

   Consider the common method names associated with lists.

4. 4.

   T/F: ArrayLists can change their size dynamically during runtime.

   • True
   • False

   Hint

   Think about the key feature of ArrayLists.

5. 5.

   Create a comprehensive Java application that leverages an ArrayList to manage tasks. The application should allow users to add, remove, and view tasks dynamically.

   Hint

   Think about how you would represent tasks and manage user input.

6. 6.

   Analyze and optimize a given code snippet that uses an ArrayList for storing student grades. Discuss the efficiency of current methods and suggest improvements.

   Hint

   Focus on balancing read vs write operations in your analysis.