NULL « Struts « JSP-Servlet Q&A

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1. Struts2, String null check    stackoverflow.com

I'm trying to do a null check on a String but it won't work. 

<s:iterator value="matrix" var="row">
    <tr>
       <s:iterator value="value" var="col">
   ...

2. javax.servlet.ServletException: null    stackoverflow.com

Recieved the following error whilst testing a small apache strut based web application ive been working on, the crux of the matter is that somehow a null httpservletrequest request parameter was ...

3. Struts if evaluating a big decimal value of 0.0 as null    stackoverflow.com

I have two big decimal fields x and y. If x is not null I would like to display x otherwise I would like to display y in a jsp. The ...

4. getServletContext().getAttribute(Globals.MESSAGES_KEY) always returns NULL    struts.1045723.n5.nabble.com

5. Struts, ''dataSource'' is null    coderanch.com