How to implement the encoding and decoding data ?

How to implement the encoding and decoding data ?
ANS: JSF provide the two way implement of these
direct implementation
delegated implementation
direct implement the component itself implement encoding and decoding
delegated implementation the component delegate to the renderer that does the encoding and decoding .this is not render specific.
JSF component consist of the two thinks
1-Component
2-Renderer
1-Component class used to define state and behavior of a UI component .
2-Renderer define how the component will be read form the request and how it will be displayed usually though HTML .