Variable number of fields

[Gangreen]

I need to create a class which offers a variable amount of fields. These fields might be String or int.

Example:

myObject1 might have as fields:
description - String
idNumber - int
authorName - String

myObject2 might contain
description - String
idNumber - int
authorName - String
year - int

myObject1 and myObject2 should be objects of the same class.
This needs to be completely transparant. I should be able to get the values using:

myObject.getVal ue("description ") ... which should return a string
myObject.getVal ue("year") ...which should return an integer

I assume the underlying datastructure should have a hashmap-like structure, so I can map the name of the field to it's value, however, I seem to be unable to figure out how let getValue return an String in the first case, and an Integer in the second.

note that I do not want to return Object. I want to have a clear distinction between String or integer. I have no clue which fields might occur, or how many string-fields or int-fields it might have.

any help would be appreciated.
Thanks

[Gangreen]

I have recieved an answer Here.