Explore topic-wise MCQs in Object Oriented Programming.

This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Object Oriented Programming knowledge and support exam preparation. Choose a topic below to get started.

1.

A static nested class is _____________ class in behavior that is nested in another _________ class.

A. Top level, top level
B. Top level, low level
C. Low level, top level
D. Low level, low level
Answer» B. Top level, low level
Discussion
2.

If a declaration of a member in inner class has the same name as that in the outer class, then ________________ enclosing scope.

A. Outer declaration shadows inner declaration in
B. Inner declaration shadows outer declaration in
C. Declaration gives compile time error
D. Declaration gives runtime error
Answer» C. Declaration gives compile time error
Discussion
3.

How to create object of the inner class?

A. OuterClass.InnerClass innerObject = outerObject.new InnerClass();
B. OuterClass.InnerClass innerObject = new InnerClass();
C. InnerClass innerObject = outerObject.new InnerClass();
D. OuterClass.InnerClass = outerObject.new InnerClass();
Answer» B. OuterClass.InnerClass innerObject = new InnerClass();
Discussion
4.

A nested class can have its own static members.

A. True
B. False
Answer» C.
Discussion
5.

How to access static nested classes?

A. OuterClass.StaticNestedClass
B. OuterClass->StaticNestedClass
C. OuterClass(StaticNestedClass)
D. OuterClass[StaticNestedClass]
Answer» B. OuterClass->StaticNestedClass
Discussion
6.

Which among the following is the correct advantage/disadvantage of nested classes?

A. Makes the code more complex
B. Makes the code unreadable
C. Makes the code efficient and readable
D. Makes the code multithreaded
Answer» D. Makes the code multithreaded
Discussion
7.

Use of nested class ____________ encapsulation.

A. Increases
B. Decreases
C. Doesn’t affect
D. Slightly decreases
Answer» B. Decreases
Discussion
8.

The nested class can be declared ___________________

A. Public
B. Private
C. Protected
D. Public, Protected, Private or Package private
Answer» E.
Discussion
9.

Static nested classes doesn’t have access to _________________ from enclosing class.

A. Private members
B. Protected members
C. Public members
D. Any other members
Answer» E.
Discussion
10.

Non-static nested classes have access to _____________ from enclosing class.

A. Private members
B. Protected members
C. Public members
D. All the members
Answer» E.
Discussion
11.

How many categories are nested classes divided into?

A. 2
B. 3
C. 4
D. 5
Answer» B. 3
Discussion
12.

Which feature of OOP reduces the use of nested classes?

A. Encapsulation
B. Inheritance
C. Binding
D. Abstraction
Answer» C. Binding
Discussion
13.

Which among the following best describes a nested class?

A. Class inside a class
B. Class inside a function
C. Class inside a package
D. Class inside a structure
Answer» B. Class inside a function
Discussion
14.

HOW_TO_ACCESS_STATIC_NESTED_CLASSES??$

A. OuterClass.StaticNestedClass
B. OuterClass->StaticNestedClass
C. OuterClass(StaticNestedClass)
D. OuterClass[StaticNestedClass].
Answer» B. OuterClass->StaticNestedClass
Discussion
15.

How to create object of the inner class?$

A. OuterClass.InnerClass innerObject = outerObject.new InnerClass();
B. OuterClass.InnerClass innerObject = new InnerClass();
C. InnerClass innerObject = outerObject.new InnerClass();
D. OuterClass.InnerClass = outerObject.new InnerClass();
Answer» B. OuterClass.InnerClass innerObject = new InnerClass();
Discussion
16.

A_nested_class_can_have_its_own_static_members.$

A. True
B. False
Answer» C.
Discussion
17.

Instance of inner class can exist only _______________ enclosing class.

A. Within
B. Outside
C. Private to
D. Public to
Answer» C. Private to
Discussion
18.

Static nested classes doesn’t have access to _________________ from enclosing class.$

A. Private members
B. Protected members
C. Public members
D. Any other members
Answer» E.
Discussion