The J2EE™ Tutorial Second Edition

Creating a Custom Converter

As explained in Conversion Model (page 651), if the standard converters included with JavaServer Faces technology don't perform the data conversion that you need, you can easily create a custom converter to perform this specialized conversion.

All custom converters must implement the Converter interface. This implementation, at a minimum, must define how to convert data both ways between the two views of the data described in Conversion Model (page 651).

This section explains how to implement the Converter interface to perform a custom data conversion. To make this implementation available to the application, the application architect registers it with the application, as explained in Registering a Custom Converter ...