| Package | Description | 
|---|---|
| org.apache.poi.openxml4j.exceptions | |
| org.apache.poi.openxml4j.opc.internal | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ODFNotOfficeXmlFileExceptionThis exception is thrown when we are given an ODF-based file
  (eg OpenOffice .ods) instead of an actually OOXML (Office Open XML) file | 
| class  | OLE2NotOfficeXmlFileExceptionThis exception is thrown when we are given an OLE2-based file
  (eg Excel .xls) instead of an actually OOXML (Office Open XML) file | 
| Modifier and Type | Method and Description | 
|---|---|
| static ZipSecureFile | ZipHelper. openZipFile(java.io.File file)Opens the specified file as a secure zip, or returns null if no 
  such file exists | 
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