Package org.apache.commons.lang3
Class ObjectUtils.Null
java.lang.Object
org.apache.commons.lang3.ObjectUtils.Null
- All Implemented Interfaces:
Serializable
- Enclosing class:
- ObjectUtils
Class used as a null placeholder where
null
has another meaning.
For example, in a HashMap
the HashMap.get(Object)
method returns null
if the Map
contains null
or if
there is no matching key. The null
placeholder can be used to distinguish between these two cases.
Another example is Hashtable
, where null
cannot be stored.
- See Also:
-
Method Summary