I am newly started using WAMP server. I am unable to deploy my java application on it. only Html pages run. Please help with directory structure and where to keep jsp, java,
WAMP Server is primarily meant for PHP/MySQL Development on Windows and does not support Java/JSP out of the box.(AFAIK) While it would be possible to use the same WAMP installation for configuring it to support JSPs, you would still need a Servlet Container for interpreting your Java/JSP source files. Since you are new to WAMP, it would be more logical to install a different Servlet Container such as Tomcat given below to reduce the time needed to get you up and running.
To deploy JSP applications with minimal configuration/maintenance other than your project specifications, check out Apache Tomcat for Windows.
http://tomcat.apache.org/ - Download Tomcat 6.0(Windows Service)