The [Google Java Style Guide §4.7][style] states:
Optional grouping parentheses are omitted only when author and reviewer agree that there is no reasonable chance the code will be misinterpreted without them, nor would they have made the code easier to read. It is not reasonable to assume that every reader has the entire Java operator precedence table memorized.
Use grouping parentheses to disambiguate expressions that contain both
&&, or both shift and arithmetic operators.
Suppress false positives by adding the suppression annotation
@SuppressWarnings("OperatorPrecedence") to the enclosing element.