Java is a simple, general-purpose, object-oriented,
and high-level programing language that is capable of developing stand-alone,
web-based (server-side), enterprise-based, mobile based and electronic
application.
Apart from programing language java also can be
defined in the fallowing two ways:-
Ø As
a platform.
Ø As
a Technology.
Java
as a Programing Language:-
Program:-A
program is a chain of steps which are created for doing the specific task and
these steps in static state.
Why
Program:-To automate the System (computer System).
Process:-A
program in execution state is known as processes which are in dynamic state.
Programing
Language:-They are the helper component by which we are
creating the program.
Types
of Programing language:- There
are mainly three types of programing language:-
1. Low Level Programing Language.(e.g-Machine,Asembley
language )
2. Middle Level Programming Language.(e.g.-C
Language)
3.Higl Level Programing Language.(e.g-COBOL,FOTON,BASIC,CPL,BCPL,Simula,C++,java,.Net,Php
etc.)
Why
Programing Language:-In Order to create a program.
Java
as a Platform:-
Platform:
- Any
hardware or software environment or combination of both in which a program
runs, known as a platform. Since Java has its own Runtime Environment (JRE) and
API, it is called platform.
Because of JRE (Own s/w platform of java) java is known as platform but not an
H/W it is S/W platform.
Software
Platform:-O.S (Windows, Linux, Solaris, Mac and Android),
JRE.
Hardware
Platform: - Processor
(duel-Core, core-2 duel, i3, i5, i7).
Java
as a Technology:-
According
to Sun, 3 billion devices run java. There are many devices where java is
currently used. Some of them are as follows:
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.
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