JAVA is an important  and exciting advance in software technology. It enables you to built platform independent programs that execute in a wide variety of hardware and software environment. 

 One of the important environment in which JAVA is found is the internet web pages can include reference to small java programs know as applets that are dynamically retrieved from web from web server and downloaded to user's machine.

JAVA language includes several significant feature. It is object oriented and therefore enable substantial code reuse.