类的使用
org.springframework.util.comparator.NullSafeComparator

使用NullSafeComparator的程序包

程序包	说明
org.springframework.util.comparator	Useful generic java.util.Comparator implementations, such as an invertible comparator and a compound comparator.

org.springframework.util.comparator中NullSafeComparator的使用

声明为NullSafeComparator的org.springframework.util.comparator中的字段

限定符和类型	字段和说明
static NullSafeComparator	NullSafeComparator.NULLS_HIGH A shared default instance of this comparator, treating nulls higher than non-null objects.
static NullSafeComparator	NullSafeComparator.NULLS_LOW A shared default instance of this comparator, treating nulls lower than non-null objects.