title: Apache POI-HSSF vs POI-XSSF
body: <blockquote>
    <p>HSSF is the POI Project's pure Java implementation of the Excel '97(-2007) file format. XSSF is the POI Project's pure Java implementation of the Excel 2007 OOXML (.xlsx) file format.</p>
  </blockquote>
  
  <p>Are there any <strong><em>export</em></strong> limitations when using HSSF?</p>
  
  <p>I've once read somewhere that Excel '97 just supported <code>&lt;65.000 Entries</code>.</p>
  
  <p>Is it safe to use HSSF to export excel sheets with more than 65.000 Entries, or why would I use XSSF?</p>