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Cor Java

A vibrant illustration of Java programming concepts with a focus on object-oriented programming, featuring symbols for classes, inheritance, and encapsulation with colorful depictions of coding elements.

Java Object-Oriented Programming Quiz

Test your knowledge in Java's object-oriented programming concepts with our engaging quiz! This quiz is designed to challenge your understanding of core principles, keywords, and techniques used in Java programming.

Whether you're a beginner or looking to refresh your skills, this quiz will cover:

Constructors
Inheritance
Encapsulation
Static Methods and Variables

15 Questions4 MinutesCreated by CodingDove42

Which is the default return type of constructor

No return Type

Class object in which it is defined

Void

None

When is the object created with a new keyword

At Run Time

At Compile Time

Depends on the code

Which keyword must be used to inherit a class from another class

Extend

Extends

Implements

Derives

Which of the following access specifier must be used while implementing encapsulation

Private

Public

Protected

Default

Which of the following keyword should be used for allocating memory space for the object

New

Create

Classname

Allocate

Which of the following is not a part of oops concept

Classes

Object

Inheirtance

Friend function

Same Function defined with varying parameters in a same class is called as

Function Overriding

Function Overloading

Function Duplication

None

Same Function defined in base class and derived class is called as

Function Overriding

Function Overloading

Function Duplication

None

Which of the keyword must be used in order to invoke the constructor of base class

Super

Base

Invoke

None

Java supports Multiple inheritance without interfaces

True

False

Which of the keyword must be used if we want to create a class from an interface

Implements

Extends

Extend

None

How to create a constructor?

Class Name and constructor name must be same

Object name and class must be same

Method name and constructor name must be same

None

How to invoke a static method

Using object

Using method name

Using classname

Static Variable is automatically initialized to zero if no value is provided.

True

False

Array size can be expanded in runtime

True

False

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