Java Basics Quiz6

Welcome to Selenium Basics Quiz Series.

This quiz consists of 17 multiple-choice questions.

Keep the following in mind:

Multiple Attempts - You will have multiple attempts for this quiz.
Timing - You will need to complete each of your attempts in one sitting, as you are allotted 7 minutes to complete each attempt.
Answers - You may review your answer-choices and compare them to the correct answers after your final attempt.

To start, click the "Next" button. When finished, click the "Submit Quiz" button

What is Constructor in Java?

Constructor is a Method in Java

a constructor is a block of codes similar to the method. It is called when an instance of the class is created.

Constructor is the root class in java

What is false about constructor?

Constructors cannot be synchronized in Java

Constructor can have a return type

“this” and “super” can be used in a constructor

Java does not provide default copy constructor

Abstract class cannot have a constructor.

True

False

What would be behaviour if the constructor has a return type?

Compilation error

Runtime error

Compilation and runs successfully

Only String return type is allowed

Which of these keywords is used to define interfaces in Java?

Interface

interface

intf

Which of these can be used to fully abstract a class from its implementation?

Interfaces

Objects

Packages

None of the Mentioned

Which of these access specifiers can be used for an interface?

Public

Protected

private

Which of these keywords is used by a class to use an interface defined previously?

import

implements

Implements

Which of the following is the correct way of implementing an interface salary by class manager?

class manager extends salary {}

class manager implements salary {}

class manager imports salary {}

All methods must be implemented of an interface.

True

False

What type of variable can be defined in an interface?

public static

private final

static final

What does an interface contain?

Method definition

Method declaration

Method declaration and definition

What happens when a constructor is defined for an interface?

Compilation failure

Runtime Exception

The interface compiles successfully

The implementing class will throw exception

What happens when we access the same variable defined in two interfaces implemented by the same class?

Compilation failure

Runtime Exception

The JVM is not able to identify the correct variable

The interfaceName.variableName needs to be defined

Which of these keywords are used to define an abstract class?

abstract

Abstract

abst

Which of these is not abstract?

Thread

AbstractList

List

Which of these is not a correct statement?

Every class containing abstract method must be declared abstract

Abstract class defines only the structure of the class not its implementation

Abstract class can be initiated by new operator

Abstract class can be inherited

Submit a Comment Cancel reply