title: java.lang.IncompatibleClassChangeError in Apache POI while running in Oracle Agile 9.3.0.2 for Linux
body: <p>I am building a Java Px in Oracle Agile 9.3.0.2.</p>
  
  <p>My Px involves interaction with Excel files of both formats (HSSF and XSSF).</p>
  
  <p>I am using Apache POI library for excel file processing.</p>
  
  <p>But i get <strong>"java.lang.IncompatibleClassChangeError"</strong> for this line :</p>
  
  <p><strong>Workbook workbook = WorkbookFactory.create(ip);</strong></p>
  
  <p>where <strong>ip</strong> is the input stream of the excel file.</p>
  
  <p>when i try to access any HSSF spreadsheet file. <strong>(.xls)</strong></p>
  
  <p>The Px works fine for XSSF spreadsheet files. <strong>(.xlsx)</strong></p>
  
  <p>Please help!!!!</p>