Java server pages (JSP) is based on java languages and used to develop dynamic web pages JSP was developed by Sun Microsystems to allow server side development. JSP files are HTML files with special Tags containing Java source code that provide the dynamic content.JSP provide excellent server side scripting support for creating database driven web applications. JSP is a java technology which allows developers to create wide ranges of web services like ecommerce, banking ,corporate intranet banking. JSP combines HTML, XML, Java Servlet and JavaBeans technologies into one highly productive technology which allow web developers to develop reliable, high performance and platform independent web applications . WHY JSP? JSP is easy to learn. as JSP is based on java it provide robust plateform for web development. JSP file contains the HTML , XML , Java Servlet and Java Beans technologies. you can take one JSP file move it to the different plateform. web server or JSP servlet engine.