Bird
0
0

Why are wrapper classes used in Java?

easy📝 Conceptual Q11 of 15
Java - Wrapper Classes
Why are wrapper classes used in Java?
ATo replace all primitive types with objects
BTo improve the speed of primitive operations
CTo allow primitive types to be treated as objects
DTo create new primitive types
Step-by-Step Solution
Solution:

  1. Step 1: Understand primitive vs object types

    Primitive types like int or double are not objects, so they can't be used where objects are required.

  2. Step 2: Role of wrapper classes

    Wrapper classes like Integer or Double wrap primitive values so they can be used as objects.

  3. Final Answer:

    To allow primitive types to be treated as objects -> Option C

  4. Quick Check:

    Wrapper classes = primitive as objects [OK]
Quick Trick: Wrapper classes wrap primitives as objects [OK]
Common Mistakes:
  • Thinking wrapper classes speed up primitive operations
  • Believing wrapper classes replace primitives entirely
  • Confusing wrapper classes with new primitive types

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Java Quizzes
Arrays - Array declaration and initialization - Quiz 2easy Command Line Arguments - Syntax for command line arguments - Quiz 6medium Command Line Arguments - Syntax for command line arguments - Quiz 13medium Command Line Arguments - Accessing arguments - Quiz 7medium Packages and Access Control - Protected access modifier - Quiz 12easy Packages and Access Control - Protected access modifier - Quiz 5medium Packages and Access Control - Creating packages - Quiz 11easy Static Keyword - Why static is needed - Quiz 5medium Static Keyword - Static blocks - Quiz 14medium Wrapper Classes - Unboxing - Quiz 15hard