What is java..? and why do I need it..?

*) The answer is : that java is programming language and computing platform it was first release by sun Microsystem in 1995.

*)There are lots of application and web-sites that will not work unless you have java Installed,and       more are created everyday.

*) Java is fast,secure and reliable.

*)Java is use everywere for ex. In your MobileApplication, Games, web-based content etc.