| Package | Description | 
|---|---|
| org.springframework.util.comparator | Useful generic  java.util.Comparatorimplementations,
 such as an invertible comparator and a compound comparator. | 
| Modifier and Type | Field and Description | 
|---|---|
| static NullSafeComparator | NullSafeComparator. NULLS_HIGHA shared default instance of this comparator, treating nulls higher
 than non-null objects. | 
| static NullSafeComparator | NullSafeComparator. NULLS_LOWA shared default instance of this comparator, treating nulls lower
 than non-null objects. |