java - How to handle spring tag's if it is not checked? -

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I have a scenario where an unchecked checkbox null value passes and Neur Pointer generates results in the exception. Can anyone tell me how the form can handle: checkbox if it is not checked?

Code in jsp 

  & lt; Form: checkbox path = "document list [$ {DocStatus.index}] .YnChkBox" cssClass = "genradio" value = "- 1" onclick = "selectkeybox (event.keyCode, this)" />   
 Any help is appreciated   
 
 
 Code> validation  interface,  valid ()  the method as your spring form tag to all  assumptions .  
 To validate one of the forms you have  
 Hope it helps !!

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