Map

OperatorReturns
get()Returns the String value to which the specified key is mapped in this identity hash map. Returns null if the map contains no mapping for this key.
size()Returns a number which represents the size of the given map.
isEmpty()Returns a Boolean value - True if this map contains no key-value mappings; 
- False, if this map contains key-value mappings
containKey()Returns a Boolean value - True, if this map contains a mapping for the specified key;
- False, if this map does not contain a mapping for the specified key.
containValue()Returns a Boolean value - True, if this map maps one or more keys to the specified value; otherwise false
keys()Returns a List of the keys contained in this map.
toMap()Returns the Map from given JSON formated String
Map()Returns the Empty Map