From the quick tech Glossary

Java
Java is a programming language developed by Sun Microsystems, to write programs which can safely be downloaded from the Internet and run without causing harm to your computer through viruses.

Java is perfect for general-purpose programming, applications and creating applets.

the elements of web development

The Web Developer

A website is created by the web developer, which can mean an individual "Webmaster" (or Webmistress) or a Web Development team consisting of graphic artists, technical programmers and so on. Although in the case of the latter the focus on each team individual varies according to his or her specialization, these are the main areas a web developer, team or individual, would cover:

Domain Name : Helping the client choose and / or purchase the domain name.

Design : Custom-design the website according to the needs of the client.

Content : Provide suitable, original content if required.

Offer maintenance / updating work on a regular basis including programming needs.

Web Hosting : Provide or help the client in finding an appropriate hose.

Site Marketing : Find ways to get your business in the search engines through links etc. Provide marketing strategies to keep your website dynamic and in touch with its customers.