15.14. Summary

Try these first

1. 1.

   What is the purpose of the Collections Framework in Java?

   Hint

   Think about data management.

2. 2.

   Define Generics in Java.

   Hint

   Consider how it helps with type safety.

3. 3.

   What does the Collections Framework in Java allow?

   • A. Only store primitive data types
   • B. Manage groups of objects
   • C. Only manage single elements

   Hint

   Think about the key definition of the Framework.

4. 4.

   True or False: Generics prevent runtime errors by enforcing type checks at compile time.

   • True
   • False

   Hint

   Consider the role of Generics.

5. 5.

   Create a program that builds a List of different data types and demonstrate the potential issues without Generics.

   Hint

   Consider type conversions.

6. 6.

   Design a generic Pair class that can hold two elements of any type and implement a method to swap their values.

   Hint

   Recall class definition with generics.