NullValue (eXo PLF:: WS :: Framework :: JSON 6.2.2 API)

java.lang.Object
- org.exoplatform.ws.frameworks.json.value.JsonValue
- - org.exoplatform.ws.frameworks.json.value.impl.NullValue

```
public class NullValue
extends JsonValue
```
Version:

$Id: NullValue.java 34417 2009-07-23 14:42:56Z dkatayev $

Author:

Andrey Parfonov

- Constructor Summary
  
  Constructors
  Constructor Description
  
  NullValue()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  boolean isNull()
  
  String toString()
  
  void writeTo(JsonWriter writer)
  Write value in given writer.
  - Methods inherited from class org.exoplatform.ws.frameworks.json.value.JsonValue
    addElement, addElement, getBooleanValue, getByteValue, getDoubleValue, getElement, getElements, getFloatValue, getIntValue, getKeys, getLongValue, getNumberValue, getShortValue, getStringValue, isArray, isBoolean, isDouble, isLong, isNumeric, isObject, isString, size
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - NullValue
```
public NullValue()
```
- Method Detail
  - isNull
```
public boolean isNull()
```
    Overrides:
    
    isNull in class JsonValue
    
    Returns:
    
    true if value is 'null', false otherwise. Should be overridden.
  - toString
```
public String toString()
```
    Specified by:
    
    toString in class JsonValue
  - writeTo
```
public void writeTo(JsonWriter writer)
             throws JsonException
```
    Write value in given writer.
    
    Specified by:
    
    writeTo in class JsonValue
    
    Parameters:
    
    writer - Writer.
    
    Throws:
    
    JsonException - if any errors occurs.