Defining JSP

JSP depends upon HTTP servIets-the JSP compiler generates the source code for an HTTP servIet from a jsp file. The Java classes produced using the HTTP servIet and JSP are essentially equivalent. You can use either technology to create dynamic web pages. JSP emphasizes page design with standard HTML formatting, so that it is more convenient to use JSP for creating dynamic web pages than it is to write a Java HTTP servlet. With JSP, you embed Java code in HTML using special JSP tags similar to HTML tags. You install the JSP page, which has a jsp extension, into the Java Web Server's public-html directory, just as you would do with a static HTML page. When JavaWeb Server serves a JSP page to a client, it tests whether the file has been compiled. If not, it calls the JavaWeb Server's JSP compiler to compile the file into a servlet. A.jsp file is only recompiled when it has changed.

Using beans from JSP pages also makes it possible for web page designers to create and maintain dynamic web pages without having to learn Java programming.

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