code: public final Object getContent(Class<?>[] classes)
      throws java.io.IOException {
          return openConnection().getContent(classes);
      }
docs: Gets the contents of this URL. This method is a shorthand for:
  <blockquote><pre>
  openConnection().getContent(Class[])
  </pre></blockquote>
  
  @param classes an array of Java types
  @return     the content object of this URL that is the first match of
  the types specified in the classes array.
  null if none of the requested types are supported.
  @exception  IOException  if an I/O exception occurs.
  @see        java.net.URLConnection#getContent(Class[])
  @since 1.3