Java Quiz 2- Classes, Collections, Threads

Java Quiz 2- Classes, Collections, Threads

Professional Development

30 Qs

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Java Quiz 2- Classes, Collections, Threads

Java Quiz 2- Classes, Collections, Threads

Assessment

Quiz

Computers

Professional Development

Practice Problem

Medium

Created by

Nitin Gupta

Used 4+ times

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30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a correct definition of a class?

a) An instance of an object

b) A blueprint or prototype for creating objects

c)A method in Java

d) A package in Java

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which keyword is used to refer to the current instance of an object within a class?

a) object

b) this

c) self

d) class

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these best describes "Encapsulation"?

a) Breaking a complex problem into simpler pieces

b) Inheriting properties from a parent class

c) Implementing multiple interfaces

d) Wrapping up of data and methods into a single unit

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Can a class have multiple constructors?

Yes

No

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which keyword is used to implement an interface?

a) extends

b) new

c) interface

d) implements

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many interfaces can a Java class implement?

a) None

b) Only one

c) Two

d) As many as needed

7.

FILL IN THE BLANK QUESTION

45 sec • 1 pt

An interface with no methods is known as?

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