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Introduction to java

Java is a programming language it was developed by Sun Microsystems in 1991, later acquired by Oracle Corporation. It was developed by James Gosling, Bill Joy, Mike Sheradin, Patrick Naughton.

Java software development was initiated in 1991 and released in 1995. It is known as a high-level language because it can be read and written easily by users.

Java is a fast, simple, reliable, secured and object-oriented programming language. Java runs on a different platforms, such as Windows, UNIX/LINUX, Mac OS.

Java program can run on a wide variety of computers because it does not execute instructions on a computer directly. Instead, Java runs on a Java Virtual Machine (JVM).

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"Â); 
   } 
}â€‹

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 freetimelearning.com, irctc.co.in, onlinesbi.com 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 Vertions :

Version	Year
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

Java Tutorial