15.3. Set Interface and Its Implementations

Try these first

1. 1.

   What is the primary characteristic of a Set in Java?

   Hint

   Think about how a collection handles similar items.

2. 2.

   Which Set implementation maintains the order of insertion?

   Hint

   This implementation has 'linked' in its name.

3. 3.

   What does the Set interface in Java ensure?

   • Allows duplicates
   • No duplicates allowed
   • Sorts elements

   Hint

   Think about how duplicate values are handled.

4. 4.

   True or False: LinkedHashSet maintains the order of how elements are added.

   • True
   • False

   Hint

   Reflect on its name and structure.

5. 5.

   Consider a scenario where you are developing a school system to maintain a unique list of student IDs. Discuss the advantages and disadvantages of choosing each Set implementation for this task.

   Hint

   Evaluate how each implementation's characteristics align with the requirements of the task.

6. 6.

   Implement a collection to store a list of unique book titles that must be maintained in alphabetical order. Discuss how you would achieve this and why your chosen implementation is optimal.

   Hint

   Think of the importance of organization for the book titles.