Java Map Object. A map cannot contain duplicate keys. The following method converts the Student object to a Map using reflection.
It can store different types. For now lets perform the conversion manually. One object is used as a key index to another object value.
A mapentrySet method returns a Set view of the mapping contained in the map.
They allow an object - the key - to be mapped to another object the value. It models the function abstraction in mathematics. Stream map Function mapper. ModelMapper modelMapper new ModelMapper.
