Fix some IntelliJ/compiler warnings
Use common interfaces where possible
Cleanup after testing POIFSDump
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1738032 13f79535-47bb-0310-9956-ffa450edef68
don't leave behind files when running unit tests. In the future this should be revisited to verify POI isn't writing workbooks that are unopenable/corrupt by applications that read POI's formats (MS Office, OpenOffice, LibreOffice, etc)
Add tests for initial patch applied by Nick in r1582892
Fix and test AreaReference#isWholeColumnReference to take account of the prevailing spreadsheet version. Fixing all users of this is a big undertaking, so for now I've left a fallback on the original behaviour for some cases.
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1685101 13f79535-47bb-0310-9956-ffa450edef68
Javen O'Neal
Dominik Stadler
David North