This document provides an introduction and overview of the Java programming language. It discusses that Java was developed by James Gosling in 1990 at Sun Microsystems to be a simple, secure, object-oriented language for developing applications on the internet. The document then covers Java's history, key features like platform independence and object orientation, and how Java programs are executed using the Java Virtual Machine. It also summarizes the different modules of Java - JSE, JEE, and JME - and provides a basic example Java program.

1. Submitted To:
Department of Computer Science
RIMT-Institute of Engineering & Technology
Mandi-Gobindgarh
Punjab( India)
Developed By:
Shashi Kr. Singh (1150986)

2. Introduction to Java:
 Java is programming language. It is mainly designed to
develop internet application by providing platform
independency
 Java is very simple, high-level, secured ,multithreaded , object-
oriented programming language
 It was developed by James Gosling in Sun microsystem in
1990’s for developing internet application
 Its first version released in 23 January 1995

3. History of java
 1990 Sun Microsystems decided to develop special software
that could be used to manipulate consumer electronic devices.
A team of Sun Microsystems programmers headed by James
Gosling was formed to undertake this task.
 1991 After exploring the possibility of most Object Oriented
Programming Language C++, the team announced a new
language named “Oak”.
 1992 The team , known as a Green Project team by Sun
 1994 The team developed a web browser called “Hot Java”
to locate and run applet programs on Internet.
 1995 Oak was named “Java”, due to some legal issue. Java
is just a name and is not an acronym.
 1996 Java established itself not only a leader for Internet
Programming but also as a general-purpose, object oriented
programming language.

4. Features of Java

5. JVM,JDK & JRE
 JVM-Java Virtual Machine is a software that execute java byte codes by
converting byte codes into machine language of current operating system’s
understanding format.
 Java software is divided into two type
 JDK-Java Development Kit has both compiler and JVM So
using JDK we can develop, compile and execute new java application
 JRE-Java Runtime Environment has only JVM. Hence using JRE
We can only execute already developed applications.
 Diagram:
Java Software
JDK JRE
JVMCompiler +
JRE
JDK
JVM
JRE

6. Modules of Java:
Since java can be used to developed all kinds of software application. so
It is called as programming suite
Java can be divided into three modules there are :
 JSE –java standard edition
 JEE –java enterprise edition
 JME –java mobile/micro edition

7. JSE
 JSE means java standard edition
 It is installable software as JDK software
 Latest version is JDK8.0
 This module is given to develop standalone application, desktop etc.
 The application that specific to one computer and contain main() method is
called standalone application
 Standalone application that contains GUI is called as desktop application

8. JEE
 JEE means java Enterprise edition
 It is not installable software
 JEE specification contain rules guidelines to develop webserver and
application server software like weblogic,Tomcat server
 Using this we can be developed
i) Web Application(websites)
ii) Distributed Application
iii) N-tier Application

9. JME
 JME means java mobile/micro edition
 For JME module, JSE module is base module
 It is installable software
 To develop mobile application and micro application in java
environment like mobile games ,sim cards etc

10. Process

11. Principal of OOPs :
 Object Oriented Programming (OOP) attempts to emulate the
real world in software systems. The real world consists of
objects, categorized in classes. In Object Oriented
Programming, classes have attributes, represented by data
member.
Feature of Object Oriented Programming
 Class & object
 Information Encapsulation(Hiding)
 Abstraction
 Inheritance
 Polymorphism

12. Where Java is mostly used:

13. An Example:
class First
{
int a=10;
Public static void main(String[] args)
{
System.out.println(“Welcome to JAVA”+a);
}
}

14. System Requirements:
 Basic programming knowledge