#introductiontojava

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What is Java ? Uses and Prerequisites

What is Java

This Java Tutorial is For?

What are Prerequisites to Learn Java?

Tools required for Learning Java

Creating a Hello World Program in Java

Uses of Java Programming Language

Types of Java Applications

What is Java

Java is a high-level programming language that was first developed in 1981 by a group of people led by James Gosling. The Language was first called 'Oak' however; it was later retitled as 'Java' in 1995. Java is the completely robust and platform-independent language that makes it the most popular choice among the developers.

This Java Tutorial is For?

If coding excites you but you are overwhelmed with a cumbersome material present on the internet, this is the place for you.

If you are a professional who is here to enhance your familiarity regarding Java, this tutorial will improve your knowledge with just theory but also with the practical programs.

What are Prerequisites to Learn Java?

It is important to know what a computer program is and what computer programming languages are. Let us define them before we move ahead.

Suggested Read: 100 Best Resources To Learn Java.

Computer Program: It is a set of instructions that performs a precise task. It is executed by a computer in its central processing unit.

Programming Language: It is a computer language designed to give instructions to the computer and fetch the results. It is also used to create programs to control the behavior of the computer and to present algorithms.

Tools required for Learning Java

In order to learn java efficiently, it is required to execute java programs on the computer, which requires the following software to be installed.

Java Development Kit (JDK).

Text Editor: Notepad / Eclipse

Creating a Hello World Program in Java

public class HelloWorld { public static void main(String []args) { System.out.println("Hello World! From Java" ); } }

Uses of Java Programming Language

There are numerous uses of java out of which some of them are as follows:

Operating Systems

Desktop Applications such as acrobat reader, media player, antivirus, etc.

Web Applications such as irctc.co.in.

Enterprise Applications such as insurance applications.

Mobile Applications, Embedded System, Smart Card, Robotics, Games, etc.

Types of Java Applications

The Four major types of applications can be made with the help of Java Programming are:

1)Standalone Application

Standalone applications are also known with two different names i.e. desktop application or window-based application. These types of applications can be used only after installing them on that specific machine. In order to create standalone Applications, AWT and Swings are used. E.g. open office.

2)Web Application

Web Application runs on the server. It creates dynamic pages. There are several technologies such as, servlet, JSP, struts, JSF, etc. that can be utilized to create a java web application. E.g. Gmail.

3)Enterprise Application

Enterprise Application is distributed in nature. It has the advantage of high-level security, load balancing, and clustering. In Java, EJB is used for creating enterprise applications.

4)Mobile Application

Mobile Applications are run on mobile devices. Presently Android and Java ME are used for creating mobile devices. Furthermore, even gaming applications are made with the help of java. E.g. Picsart, Truecaller.

Also Read: 30 Best Java Developer Interview Questions