title: Issues resolving XSSFWorkbook - Java - POI .jar
body: <p>I'm trying to do work upgrading a Java application to handle .xlsx, using a newer POI library than our existing one. I'm having issues similar to those mentioned in the comments to the answer here: <a href="https://stackoverflow.com/questions/4266888/apache-poi-both-xssf-and-hssf-using">Apache POI, using both XSSF and HSSF</a></p>
  
  <p>I'm pointing the new ss.usermodel, but it keeps telling me it can't resolve the XSSF workbook declaration:</p>
  
  <pre><code>Workbook xlsImport = new XSSFWorkbook();
  </code></pre>
  
  <p>I dug through some of their documentation and saw that XSSFWorkbook isn't a part of org.apache.poi.ss.usermodel. It's a part of org.apache.poi.xssf.usermodel.XSSFWorkbook. But there's no poi.xssf for me to import. Am I pointing to the wrong thing? I'm using POI 3.7 Thanks for any help you can provide.</p>