NullValue (Spring Framework 4.3.30.RELEASE API)

java.lang.Object
- org.springframework.cache.support.NullValue

所有已实现的接口:
Serializable
```
public final class NullValue
extends Object
implements Serializable
```
Simple serializable class that serves as a null replacement for cache stores which otherwise do not support null values.
从以下版本开始:
4.2.2
作者:
Juergen Hoeller
另请参阅:
AbstractValueAdaptingCache, 序列化表格

字段概要

字段
修饰符和类型	字段	说明
`static Object`	`INSTANCE`	The canonical representation of a `null` replacement, as used by the default implementation of `AbstractValueAdaptingCache.toStoreValue(java.lang.Object)`/ `AbstractValueAdaptingCache.fromStoreValue(java.lang.Object)`.

方法概要
- 从类继承的方法 java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - INSTANCE
```
public static final Object INSTANCE
```
    The canonical representation of a null replacement, as used by the default implementation of AbstractValueAdaptingCache.toStoreValue(java.lang.Object)/ AbstractValueAdaptingCache.fromStoreValue(java.lang.Object).
    从以下版本开始:
    4.3.10