title: Work flow of simpleFormcontroller in spring MVC 3.0
body: <p>I have seen many examples on how <code>simpleFormcontroller</code> works.</p>
  
  <p>But still I have some confusion.</p>
  
  <p>I want to know when <code>formBackingObject()</code>, <code>referenceData()</code>, <code>onSubmit()</code> methods invoked?</p>
  
  <p>I dont know exact working flow of these methods?</p>
  
  <p>Can anyone explain me?</p>