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Caught an exception while evaluating expression '....size()==0' against value stack

 
Josep M Serrainat
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Hi
I get this message when render a collection. "Caught an exception while evaluating expression 'contacts.size()==0' against value stack
java.lang.NullPointerException: target is null for method size"

The jsp is:


The method in action is:



The contacts is a collection of contact's of selected user. For verify the content of collection contacts, before return success, I add a simple iterator in method and printing in console all objects the collection, and this goes fine.
In action I have setter/getter of contact


In struts.xml i have this action specification



that I am making bad,
thanks for everything
 
Raza Mohd
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Posts: 247
Java MyEclipse IDE MySQL Database
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hi josep...

you can use Jstl function ..to retrive Collection size..



For this to work You need to include JSTL namespace

 
Josep M Serrainat
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Hi Raza, thanks
 
Raza Mohd
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Java MyEclipse IDE MySQL Database
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have fun joseph.....('')
 
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