Hi,
You can use Tomcat as your web server to deploy and test your servlet/jsp applications. Visit the following URL to download Tomcat server
http://tomcat.apache.org/
Once you download and install tomcat then in the installation directory, which we call it as CATALINA_HOME, find the servlet-api.jar at CATALINA_HOME/common/lib, add this jar file to your class path.
Regards,
Rakesh