s:property display INTERGER

[john lee]

 
I have class Part
 
  class Part {
      String pid, 
      Integer  qty;
}
 
how can I display object/convert inside JSP?
 
/* if define/set (Part detailpart)  before return */
 
<s:property value="detailpart.pid"/>    /* this is no problem */
 
how about qty?
 
I tried the following, but show null
   <s:property value="detailpart.qty"/>
 
I tried the following, but nothing either
    <s:property value="getText('{0,number,#,##0.00}',{detailpart.qty})"/>
 
so, how to display/convert  object inside value ?
 
thanks in advance
 
john