Mastering Java Concepts

Mastering Java Concepts

University

20 Qs

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Mastering Java Concepts

Mastering Java Concepts

Assessment

Quiz

Computers

University

Practice Problem

Hard

Created by

SIJO JOSE

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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main method signature in Java?

public void main(String[] args)

public static void main(String[] args)

public static main(String[] args)

static void main(String args)

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a valid variable declaration in Java?

string number;

int number;

float number;

int 1number;

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the default value of a boolean variable in Java?

false

1

null

true

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What keyword is used to create a class in Java?

instantiate

define

create

class

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the 'this' keyword in Java?

The 'this' keyword is used to define static methods.

The 'this' keyword is used to access global variables.

The 'this' keyword is used to create new classes.

The 'this' keyword is used to refer to the current object instance.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is inheritance in object-oriented programming?

Inheritance is a technique for managing memory allocation.

Inheritance is a method for data encryption.

Inheritance is a way to create new programming languages.

Inheritance allows a subclass to inherit attributes and methods from a superclass.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is polymorphism in Java?

Polymorphism is the ability to create multiple classes in Java.

Polymorphism is the ability of a single function or method to operate in different ways based on the object it is acting upon.

Polymorphism is the method of overriding a function in Java.

Polymorphism refers to the process of compiling Java code into bytecode.

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