Basics
OOP & Interface
Collections
Advance Java Concepts
Practice Java
Courses
  • Java Backend CourseExplore

    • Java Quiz Day 33

    Last Updated :
    Discuss
    Comments

    Question 1

    Which wildcard allows reading but not writing?

    • A


    • B

    • C

    • D

    Question 2

    What does mean?

    • A

      Unknown subtype of T

    • B

      T or its superclass

    • C

      T or subclass only

    • D

      Superclass only

    Question 3

    What is the benefit of bounded type parameters in generics?

    • A

      Restricts the types that can be used

    • B

      Allows type erasure

    • C

      Reduces performance


    • D

      Prevents compilation


    Question 4

    Which of the following defines a bounded type parameter?

    • A

    • B

    • C

    • D

    Question 5

    What is the use of in generics?

    • A

      Denotes specific type

    • B

      Denotes any type

    • C

      Denotes null

    • D

      Denotes static type

    Question 6

    Can a generic interface be created in Java?

    • A

      No

    • B

      Yes, using

    • C

      Only with class

    • D

      Only abstract interfaces

    Tags:
    Java

    There are 6 questions to complete.

    Take a part in the ongoing discussion