Extracted at 2014-06-26.
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Tools
Tools.JSON
Tools.JSON.JSONObject

Methods
 Length()
 ToString()
 _indices()
 _sizeof()
 _values()
 `[]()
 `[]=()
 accumulate()
 cast()
 create()
 fromtokener()
 getBool()
 getDouble()
 getInt()
 getJSONArray()
 getJSONObject()
 getString()
 getValue()
 has()
 isNull()
 opt()
 optBoolean()
 optFloat()
 optInt()
 optJSONArray()
 optJSONObject()
 optString()
 put()
 putOpt()
 remove()
 toJSONArray()
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Method Tools.JSON.JSONObject()->isNull()

Method isNull

int(0..1) isNull(string key)

Description

Determine if the value associated with the key is null or if there is no value.

Parameter key

A key string

Returns

true if there is no value associated with the key or if the valus is the JSONObject.NULL object