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Posted to dev@tomcat.apache.org by fergal dalton <co...@hotmail.com> on 2002/05/03 14:14:38 UTC
query
Hi,
Just a small problem, i'm having a problem using the useBean tags in my jsp
page, i am trying to pass an arraylist from the model but i get the
following error.
<jsp:useBean id="sidebarObjects" scope="request" class="java.util.Iterator"
/>
Internal Servlet Error:
javax.servlet.ServletException: Cannot create bean of class
java.util.Iterator
Any ideas
thanks.
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Re: query
Posted by David Graff <ph...@mindspring.com>.
----- Original Message -----
From: "fergal dalton" <co...@hotmail.com>
To: <to...@jakarta.apache.org>
Sent: Friday, May 03, 2002 08:14
Subject: query
>
> Hi,
>
> Just a small problem, i'm having a problem using the useBean tags in my
jsp
> page, i am trying to pass an arraylist from the model but i get the
> following error.
>
> <jsp:useBean id="sidebarObjects" scope="request"
class="java.util.Iterator"
> />
>
> Internal Servlet Error:
>
> javax.servlet.ServletException: Cannot create bean of class
> java.util.Iterator
Fergal, java.util.Iterator is an Interface which cannot be instantiated.
You have to instantiate one of the concrete implementations of the
Collections classes to get an instance of this from the object.
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Re: query
Posted by "Michael E. Locasto" <lo...@tcnj.edu>.
> <jsp:useBean id="sidebarObjects" scope="request"
class="java.util.Iterator"
> />
>
> Internal Servlet Error:
>
> javax.servlet.ServletException: Cannot create bean of class
> java.util.Iterator
>
> Any ideas
Check out tomcat-users, and read the Iterator Javadocs. It's an
Interface;
you can't instantiate an Interface. Because of this, Iterator doesn't
support
javabean-style creation (no constructor, no properties, etc). Use your
own
custom class that conforms to the bean standard and implements (or uses)
Iterator instead. I really can't give you details, I have no idea what
your design requires.
-michael
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