title: java int field let empty
body: <p>I was wondering if it was possible, in Java, to let  a field expected to be filled with an integer (such as in a JTable), empty. I mean something like <code>" "</code> for the Strings. I tried with null but it's not allowed for integers. Of course, I could put a default value <code>s.a. 0</code> but I don't want. Could you please help me?   </p>