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List of checkboxes and Array/ArrayList data binding not working.

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I have a form in which I show list of empId, first name and last name in table form. I want to show checkbox in front of every row and I have Delete button, which when clicked should delete all the employees which are checked.
I tried a lot to bind list of checkboxes to array or ArrayList of empIds. But it does not properly bind it.

When I submit the form, in my form handler I get zero sized empIds list, even though I have checked few checkboxes.

I have tried <form:checkbox /> tag. It bindes, but the chckboxes which are not selected also get submitted with null values. In my code I ignore null, but the problem with tag is I could not find how to show unchecked checkboxes in my first display.
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You should do something like the following:
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