require
Returns the required value in the map with the specified key. If the value is not in the map an exception will be thrown.
Return
The value of the mapping with the specified key.
Parameters
key
the key.
Throws
if the value is not in the map.
Returns the required value in the map with the specified key. If the value is not in the map an exception will be thrown.
The value of the mapping with the specified key.
the key.
if the value is not in the map.