nload.oracle.com/javase/1.3/docs/guide/extensions/versioning.html">
http://download.oracle.com/javase/1.3/docs/guide/extensions/versioning.html
<p>See the Extension and ExtensionSet documentation for further details</p>

<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">T