All of us (or most of us) would have started programming in Java with the ever famous ?Hello World!? program. If you can recollect, we saved this file with a .java extension and later compiled the program using javac and then executed the class file with java. Apart from introducing you to the language basics, the point to be noted about this program is that ? ?It is a client side program?. This means that you write, compile and also execute the program on a client machine (e.g. Your PC). No doubt, this is the easiest and fastest way to write, compile and execute programs. But, it has little practical significance when it comes to real world programming.
To summarize, the objective of server side programs is to centrally manage all programs relating to a particular application (e.g. Banking, Insurance, e-shopping, etc). Clients with bare minimum requirement (e.g. Pentium II, Windows XP Professional, MS Internet Explorer and an internet connection) can experience the power and performance of a Server (e.g. IBM Mainframe, Unix Server, etc) from a remote location without having to compromise on security or speed. More importantly, server programs are not only portable but also possess the capability to generate dynamic responses based on user?s request.
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