Alternate names: NumericEquality

The problem

Comparison using reference equality instead of value equality. The inputs to this comparison are boxed primitive types, where reference equality is particularly bug-prone: Primitive wrapper classes cache instances for some (but usually not all) values, so == may be equivalent to equals() for some values but not others. Additionally, not all versions of the runtime and other libraries use the cache in the same cases, so upgrades may change behavior. Furthermore, reference identity is usually not useful for primitive wrappers, as they are immutable types whose equals() method fully compares their values.

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("BoxedPrimitiveEquality") to the enclosing element.