JSF Application
Custom Converter Example in JSF JSF provides a very flexible architecture that not only let the developers use converters provided already by the implementation but also create their own converters according to the requirement of the application. This topic explains about how to create custom converter. When the user enters value to the component, it?s simply a string value. Now you may be in the need of using this value as a different object like Boolean, Date etc. Converters can help in this conversion. JSF framework has provided many converters like Boolean Converter, Byte Converter, Number Converter etc.
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http://www.javajazzup.com/issue6/page62.shtml