Wrapper type may be primitive
Reports local variables of wrapper type that are mostly used as primitive types.
In some cases, boxing can be source of significant performance penalty, especially in loops.
Heuristics are applied to estimate the number of boxing operations. For example, conversions inside loops are considered as much more numerous.
After the quick-fix is applied:
New in 2018.2
IntelliJ IDEA 2023.3, Qodana for JVM 2023.3