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This project provides a simple api to manage National Id Numbers. We found out that the use of a functional approach to tackle the problem would result in a much lighter api, therefor we decided to use java 8.

Use cases are shown in the different tests. Take for example: FinnishIdNumberTest.java

At the moment is provided implementation for all 4 Scandinavian countries:

• Denmark
• Finland
• Norway
• Sweden

For each of these countries is provided:

• validation
• gender calculation
• birthday calculation
• age calculation
• handling of side cases (Dnummer in Norway, samordningsnumber in Sweden etc.)