How to use both JSP and Servlets in an application

Is it possible to use both JSPs and Servlets in developing a single application? Call Servlets from JSPs?
I am fairly new to server-side programming and I was looking for tutorials on this subject but have been unsuccessful so far. Can anyone help?
Thanks.

It is possible to call servlets from JSP and vice-versa. For tutorial on servlets visit http://java.sun.com/docs/books/tutorial/servlets/ and http://java.sun.com/j2ee/tutorial/1_3-fcs/doc/Servlets.html.
For JSP http://java.sun.com/j2ee/tutorial/1_3-fcs/doc/JSPIntro.html.

Links at this page might help too :
http://www.javaranch.com/scwcdlinks.jsp

And two more resources.... check out Core Servlets and JavaServer Pages by Marty Hall -- it's available online. It covers the Servlet 2.2 and JSP 1.1 specifications.
More Servlets and JavaServer Pages by Mary Hall is the follow-upbook which covers the Servlet 2.3 and JSP 1.2 specifications.
Both are excellent books.

Thanks for the information. You always learn something when you visit the Ranch.

Marty's tutorial on Servlets is at:
http://www.apl.jhu.edu/~hall/java/Servlet-Tutorial/
And yup, you can implement servlets in JSP!

After learning you can use MVC framework like Struts to make life easier.

Thanks for all the information. So far, it is only in the "Core Servlets..." book by Marty Hall that I noticed a chapter on "Integrating JSPs and Servlets". While I am waiting to get this book, can someone give me a quick example of how a Servlet can be called from a JSP? I know how to call beans and XML parsing and SAX etc.
Thanks.