title: Java POI cannot find symbol WorkbookFactory
body: <p>im doing a conversion of the HSSF model to XSSF.  Im getting lil errors here and there.  I donwloaded the latest POI and dropped all the jar files in and did the apache includes in my java class.....getting this error:</p>
  
  <pre><code>import org.apache.poi.ss.usermodel.Workbook;
  
  Workbook wb = WorkbookFactory.create();
  </code></pre>
  
  <p>275: cannot find symbol
      [javac] symbol  : variable WorkbookFactory
      [javac] location: class mil.usmc.logcom.chassis.util.HSSFUtils
      [javac]         Workbook wb = WorkbookFactory.create();</p>