title: Biff exception in Java
body: <p>When I tried to read an Excel file in Java it throws "biff exception".</p>
  
  <p>What does this mean? I tried to Google it but wasn't able to find a proper explanation.</p>
  
  <pre><code>jxl.read.biff.BiffException: Unable to recognize OLE stream
  
                               at jxl.read.biff.CompoundFile.&lt;init&gt;(CompoundFile.java:116)
  
                               at jxl.read.biff.File.&lt;init&gt;(File.java:127)
  
                               at jxl.Workbook.getWorkbook(Workbook.java:221)
  
                               at jxl.Workbook.getWorkbook(Workbook.java:198)
  
                               at Com.Parsing.ExcelFile.excel(Extract.java:20)
  
                               at Com.Parsing.Extract.main(Extract.java:55)
  </code></pre>