RESTful Java Web Services - Third Edition

Mapping the path variable with Java types

At runtime, the framework automatically detects and copies the parameter values present in the inbound request into the appropriate Java types based on the request parameter type. In general, the mapping is performed on the basis of the following rules for each of the request parameter annotation types, except for the @Context annotation:

• All primitive types, such as short, int, float, double, and Boolean, except char.
• All the wrapper classes of primitive types, such as short, integer, BigDecimal, and Boolean, except char.
• All classes with a constructor that accept a single string type argument. In this case, you can define your own class with a single string type constructor and use it as a method ...