Registering a Custom Converter - The J2EE 1.4 Tutorial

Registering a Custom Converter

As is the case with a custom validator, if the application developer creates a custom converter, you must register it with the application. Here is the converter configuration for CreditCardConverter from the Duke's Bookstore application:

<converter>
  <description>
    Converter for credit card 
    numbers that normalizes 
    the input to a standard format
  </description>
  <converter-id>CreditCardConverter</converter-id>
  <converter-class>
    converters.CreditCardConverter
  </converter-class>
</converter> 

The converter element represents a Converter implementation and contains required converter-id and converter-class elements.

The converter-id element identifies an ID that is used by the converter attribute of a UI component tag to apply the converter to the component's data. Using a Custom Converter includes an example of referencing the custom converter from a component tag.

The converter-class element identifies the Converter implementation.

Creating a Custom Converter explains how to create a custom converter.

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