com.puppycrawl.tools.checkstyle.checks.whitespace
Classes 
EmptyForIteratorPadCheck
NoWhitespaceAfterCheck
NoWhitespaceBeforeCheck
OperatorWrapCheck
OperatorWrapOption
PadOption
ParenPadCheck
TabCharacterCheck
TypecastParenPadCheck
WhitespaceAfterCheck
WhitespaceAroundCheck