Java Basics Quiz

Question 1

1/11

Who initially developed Java?

Oracle

IBM

Microsoft

Sun Microsystems

Answer

MyClass Public()

Answer

void MyClass()

Answer

public void MyClass()

Answer

Operating System

Answer

Robustness

Answer

Platform Independence

Answer

Multithreading

Answer

Data hiding method

Answer

Encapsulation of data

Answer

Abstract methodology

Question 2

2/11

Which package contains the Random class in Java?

java.util

java.io

java.math

java.lang

Question 3

3/11

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

0

false

true

null

Question 4

4/11

Which method must be implemented by all threads in Java?

start()

sleep()

run()

stop()

Question 5

5/11

Which extension do Java programs use for source files?

.js

.java

.jv

.jav

Question 6

6/11

Which is a valid constructor declaration in Java?

public MyClass()

Question 7

7/11

Which environment does the Java compiler produce code for?

Hardware

Java Virtual Machine

Network

Question 8

8/11

Which of these is NOT a Java feature?

Pointers

Question 9

9/11

Which keyword is used to define a constant in Java?

final

const

static

constant

Question 10

10/11

What is Inheritance in Java?

Code reuse mechanism

Question 11

11/11

What is the superclass of all classes in Java by default?

Parent

Object

Class

System