javabeans with jsp

[JeremyRayYoo]

I don't know where exactly the javabean class goes in order for a jsp script 
to find it. Lets say that I have a jsp script in:    
~/examples/jsp/tester/tester.jsp

and tester.jsp uses a bean class called "UserBean.class".

tester.jsp has this line in the beginning:
<jsp:useBean id="bean" class="UserBean" scope="session" />

My question is from this point where do I put the bean "UserBean" and do I 
have to touch the "web.xml" or "server.xml" at all to resolve this 
problem........