Basic Concepts A Hello World Program

Question 1

Every program in java must have a____

Answer 1

Class

Question 2

What is the use of JVM?

Answer 2

• Enables WORA(Write once run everywhere)

- A run-time engine that runs java

Question 3

What is OOP?

Answer 3

Object Oriented Programming

Question 4

What does OOP stands for?

Answer 4

Object Oriented Programming

Question 5

Is Class user-defined or pre-defined?

Answer 5

User-defined.

Question 6

Class includes____&____that are common to _____of one type.

Answer 6

methods ; properties; objects

Question 7

Every program starts from a ___ method.

Answer 7

Main

Question 8

What is the most basic signature of Main method to start a java program?

Answer 8

public static void main(String[]args)

Question 9

What is the most basic signature of Main method to start a java program?

Answer 9

public static void main(String[]args)

-the parenthesis enclose parameters

Question 10

What is other name of objects?

Answer 10

Instance

Question 11

Static describes how ___is managed in___

Answer 11

objects ; memory

Question 12

Static variables & methods is included in A but not B.

Answer 12

A: Class
B: instances

Question 13

Static variables & methods is included in A but not B.

Answer 13

A: Class (belongs specifically in a class)
B: instances

Question 14

Is void a method or class?

Answer 14

Method

Question 15

What does void do?

Answer 15

Return no values

Question 16

What does PrintIn do and which cat it belongs?

Answer 16

• It prints the line on screen

- It is a method