title: file 'copy = create + write ' is right?
body: <p>when a file is copied, a newFile is created and the content which the file includes is written at the newFile ?</p>
  <p>The reaseon I ask is that I faced 'xml parse' exception.
  I receive a xml file. A server upload completed xml file to my server.
  And my java application parse it. Sometime my application throw the exception(xml document structure must begins same entity and finish same entity).
  So I asked copy process.</p>