       <th>input</td>
          <td>the buffer.</td>
        </tr>
        <tr>
          <th>offset</td>
          <td>the offset in the buffer.</td>
        </tr>
        <tr>
          <th>len</td>
          <td>the length of the data in the buffer.
</td>
        </tr>
      </table>
  </div>

    </div>
</div>


<A NAME="engineUpdate(byte)"></A>

<div class="jd-details api apilevel-1"> 
    <h4 class="jd-details-title">
      <span class="normal">
        protected 
         
         
        abstract 