Dominik Stadler c88569baf1 Fix some Sonar issues in sample "HSSFReadWrite"
Fix some IntelliJ warnings

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1786695 13f79535-47bb-0310-9956-ffa450edef68
2017-03-13 14:09:27 +00:00
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