how to write a bean class?

[nagalatha mitta]

hi friends
HFSJ book says that if "type" is used without "class" ,the bean must already exist.My doubt is how to write a bean class code,so that bean is already stored as an attribute at the scope and with the "id" we have put in <jsp:useBean> tag.
anybody let me know please

thanks in advance

[Vassili Vladimir]

Hi,

Write a standard JavaBean, put it in /WEB-INF/classes, and then in your JSP page, when using the <jsp:useBean> tag provide the full path of the class or import it using a page directive.

As an example, if the JavaBean was written in a package named beans, you have to say :

    
<jsp:useBean id = "theBeanName" class = "beans.ClassName" ... />

Or,

    
<%@ page import = "beans.ClassName" %>
<jsp:useBean id = "theBeanName" class = "ClassName" ... />

Make sure that your bean must have a public no-arg constructor.

Best of luck ...

[Michael Ku]

In your Servlet create the bean and place it into whatever scope you choose with the id you want to use