Programming

Question 1

is an object-oriented, class-based, concurrent, secured and general-purpose computer-programming language. It is a widely used robust technology.

Answer 1

Java

Question 2

is a programming language and a platform.

Answer 2

Java

Question 3

is a high level, robust, object-oriented and secure programming language.

Answer 3

Java

Question 4

Any hardware or software environment in which a program runs, is known as a _______

Answer 4

platform

Question 5

JAVA was developed by ____________ in 1991, later acquired by Oracle Corporation.

Answer 5

Sun Microsystems Inc

Question 6

Java was developed by

Answer 6

James Gosling and Patrick Naughton.

Question 7

is known as the father of Java.

Answer 7

 James Gosling

Question 8

Before Java, its name was ________

Answer 8

Oak

Question 9

Each operating system has different _________ however the output they produce after execution of bytecode is same across all operating systems.

Answer 9

Java Virtual Machine (JVM)

Question 10

ensures that the same Java code can be run on different operating systems and platforms.

Answer 10

Java Virtual Machine

Question 11

the instruction set for Java Virtual Machine and acts similar to an assembler.

Answer 11

Bytecode

Question 12

is a key platform component for building Java applications.

Answer 12

Java Development Kit

Question 13

the on-disk program that loads Java applications for the JVM to execute.

Answer 13

Java Runtime Environment(JRE)

Question 14

Java Applications:

Answer 14

1. Desktop Applications such as acrobat reader, media player, antivirus, etc.
2. Web Applications such as irctc.co.in, javatpoint.com, etc.
3. Enterprise Applications such as banking applications.
4. Mobile
5. Embedded System
6. Smart Card
7. Robotics
8. Games, etc.

Question 14

included by default when you download the Java Development Kit, and each ______ includes the core Java class libraries, a Java class loader, and a Java Virtual Machine.

Answer 14

Java Runtime Environment(JRE)

Question 15

are also known as desktop applications or window-based applications. These are traditional software that we need to install on every machine.

Answer 15

Standalone Application

Question 16

An application that runs on the server side and creates a dynamic page

Answer 16

Web Application

Question 17

An application that is distributed in nature, such as banking applications, etc.

Answer 17

Enterprise Application

Question 18

It has advantages of the high-level security, load balancing, and clustering.

Answer 18

Enterprise Application

Question 19

An application which is created for mobile devices is called a

Answer 19

Mobile Application

Question 20

It is a Java programming platform. It includes Java programming APIs such as java.lang, java.io, java.net, java.util, java.sql, java.math etc. It includes core topics like OOPs, String, Regex, Exception, Inner classes, Multithreading, I/O Stream, Networking, AWT, Swing, Reflection, Collection, etc.

Answer 20

Java SE (Java Standard Edition)

Question 21

It is an enterprise platform which is mainly used to develop web and enterprise applications. It is built on the top of the Java SE platform. It includes topics like Servlet, JSP, Web Services, EJB, JPA, etc.

Answer 21

Java EE (Java Enterprise Edition)

Question 22

It is a micro platform which is mainly used to develop mobile applications.

Answer 22

Java ME (Java Micro Edition)

Question 23

It is used to develop rich internet applications. It uses a light-weight user interface API.

Answer 23

JavaFX

Question 24

Features of Java

Answer 24

1. Simple 2. Object-Oriented 3. Portable 4. Platform independent 5. Secured 6. Robust 7. Interpreted 8. High Performance 9. Distributed

Question 25

Java is very easy to learn, and its syntax is simple, clean and easy to understand.

Answer 25

Simple

Question 26

Everything in Java is an object.

Answer 26

Object-oriented

Question 27

it is different from other languages like C, C++, etc. which are compiled into platform specific machines while Java is a write once, run anywhere language.

Answer 27

Platform Independent

Question 28

it uses its own Runtime Environment (JRE) while others uses Runtime Environment of the Operating System (OS)

Answer 28

Secured

Question 29

It uses strong memory management.

Answer 29

Robust

Question 30

it facilitates you to carry the Java bytecode to any platform. It doesn't require any implementation.

Answer 30

Portable

Question 31

Java is faster than other traditional interpreted programming languages because Java bytecode is "close" to native code.

Answer 31

High Performance

Question 32

it facilitates users to create distributed applications in Java.

Answer 32

Distributed

Question 33

place in memory where information or data is stored.

Answer 33

variable

Question 34

variable can be identified through its given name called

Answer 34

identifier

Question 35

A variable declared inside the body of the method is

Answer 35

Local Variable

Question 36

A variable declared inside the class but outside the body of the method, is called

Answer 36

Instance variable

Question 37

A variable which is declared as static using the static keywords is called _______.

Answer 37

Static variable instance

Question 38

is a place in memory(variable) whose value cannot change once it has been assigned.

Answer 38

constant

Question 39

Data Types in Java

Answer 39

1. Primitive data types 2. Non-primitive data

Question 40

are the building blocks of data manipulation. Considered as the most basic data types available in Java Language.

Answer 40

Java Primitive Data Types

Question 41

8 types of primitive data types:

Answer 41

1. bool ​​​ 5. int 2. byte 6. long 3. char ​​​​ 7. float 4. short ​​​ ​8. Double

Question 42

____ data types are used for storing whole numbers.

Answer 42

byte, short, int and long

Question 43

are used for fractional numbers.

Answer 43

float and double

Question 45

is used for storing characters(letters).

Answer 45

char

Question 46

data type is used for variables that holds either true or false.

Answer 46

boolean

Question 47

Types of Java Basic Operators

Answer 47

1. Arithmetic Operators 2. Relational Operators 3. Bitwise Operators 4. Logical Operators 5. Assignment Operators 6. Ternary Operator (miscellaneous operator)

Question 48

time when Java program is running or being executed.

Answer 48

Runtime

Question 49

it determines what part of the program or project a variable is valid or visible.

Answer 49

Variable Scope

Question 50

specifies what kind of data including the different sizes and values that can be stored in the variable.

Answer 50

Data type

Question 51

is a combination of one or more operators, constants, functions and variables that the programming language interprets to produce a value.

Answer 51

Expression

Question 52

is a word that has a predefined meaning in Java programming language syntax or it is a word that only Java language can understand.

Answer 52

Keyword

Question 53

is a rule in making or writing java language statement or commands.

Answer 53

Syntax

Question 54

are symbols that has a special meaning or a character that represents an action.

Answer 54

Operators

Question 55

are used in mathematical expressions in the same way that they are used in algebra.

Answer 55

The Arithmetic Operators

Question 56

are used to compare two values or conditions and always return a boolean value (true/false).

Answer 56

The Relational or Comparison Operators

Question 57

works directly on data bits and performs bit-by-bit operation. Its operation is similar to what is done in Boolean Algebra.

Answer 57

The Bitwise Operators

Question 58

These operators are used to assign values to a variable. The left side operand of the assignment operator is a variable and the right side operand of the assignment operator is a value.

Answer 58

. The Assignment Operators

Question 59

also known as the ternary operator. This operator consists of three operands and is used to evaluate Boolean expressions.

Answer 59

Conditonal / Ternary Operator ( Miscellaneous Operator

Question 60

describes the order in which operations are performed when an expression is evaluated. Operations with a higher precedence are performed before those with a lower precedence.

Answer 60

Operator precedence