First of all, JavaScript is not Java. It has nothing to do with Java (The language and its associated technologies from Sun Microsystems). To be honest, I'm not even sure why it's called JavaScript.

Jakarta Server Pages (formerly JavaServer Pages) is a Java standard technology that developers use to write dynamic, data-driven web pages for Java web applications. JSP is built on top of the Java ...

When you surf the Internet and peruse a Web page with interactive content, chances are that the page was developed using Microsoft Corp.’s Active Server Pages (ASP) technology or Sun Microsystems Inc.