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JAVA introduction

Author                                   :  James Gosling

Vendor                                    :   Sun Micro System

Project name                           :   Green Project

Type                                         :  open source & free software

Initial Name                             :  OAK language

Present Name                          :  java

Extensions                                : . java & .class & .jar

Initial version                            : jdk 1.0 (java development kit)

Present version                         :  java 8 2016

Operating System                   : multi Operating System

Implementation Lang               :  c, cpp;

Symbol                                       :   coffee cup with saucer

Objective                                   : To develop web applications

SUN                                           :  Stanford Universally Network

Slogan/Motto                          : WORA(write once run anywhere)

Java Sample program

Class Test
{
Public static void main (String [] args)
 {
System.out.println ("welcome to java language");
   }
}

intput and output

Compilation :- javac FileName.java,, Execution :- java Class Name,, Output :- welcome to java language

Importance of core java

According to the SUN 3 billion devices run on the java language only.

1) Java is used to develop Desktop Applications such as
 MediaPlayer,Antivirus etc.
 2) Java is Used to Develop Web Applications such as freetimestudy.com, irctc.co.in etc.
 3) Java is Used to Develop Enterprise Application such as Banking applications.
4) Java is Used to Develop Mobile Applications. 
5) Java is Used to Develop Embedded System.
6) Java is Used to Develop SmartCards. 
7) Java is Used to Develop Robotics.
 8) Java is used to Develop Games etc.

JAVA VERSIONS:-

JavaAlpha & beta      : 1995

JDK 1.0                         : 1996
 
JDK1.1                           : 1997

J2SE 1.2                       : 1998
 
J2SE 1.3                       : 2000
 
J2SE 1.4                       : 2002
 
J2SE 1.5                        : 2004
 
JAVA SE6                    : 2006

JAVA SE7                     : 2011

JAVASE8                    :2016