15.0. Introduction

Try these first

1. 1.

   What is the Java Collections Framework?

   Hint

   Think about how data is organized in Java.

2. 2.

   Define Generics in Java.

   Hint

   Remember how Generics help avoid errors at runtime.

3. 3.

   What is the purpose of Generics in Java?

   • 1) Code reusability
   • 2) Type safety
   • 3) Both

   Hint

   Think about what Generics help prevent.

4. 4.

   True or False: The Collections Framework can only hold objects of the same type.

   • True
   • False

   Hint

   Remember how we can create collections with Generics.

5. 5.

   You need a system to keep track of students in a classroom, allowing for dynamic additions of students. Discuss how you would implement this using the Collections Framework in Java.

   Hint

   Consider whether you might need to keep track of order or allow duplicate entries.

6. 6.

   Imagine you are designing a data structure that needs to record votes in an election. How could Generics help you in this situation?

   Hint

   Think about how you can record different types of votes without losing data integrity.