title: Spring Web-Service :what are SAAJ and AXIOM
body: <p><strong>SAAJ is based on DOM, the Document Object Model.</strong>
  What is meant by this statement?</p>
  
  <p><strong>AXIOM is based on StAX, the Streaming API for XML.</strong>
  What is meant by this statement?</p>
  
  <p>Which is better?</p>
  
  <p>I want to clear the concept regarding to both APIs.
  Thank You</p>