Convert classes

Question

I have studied programming in JSF, I read that for objects to be transformed into String you need a Convert to the entity.

Is there a class already ready and we adapt our Entities? How it works ?

Answer 1

You can create a class that implements the interface Converter, in it we can define how the data conversion will take place, in this way you customize this conversion.

By steps: Create a class that implements the interface javax.faces.contert.Converter and is noted with @facesConverter. A converter is a class that can transform strings in objetos and objetos in strings, this class should implement the methods getAsObject() and getAsString();

The method getAsObject() must convert from String for objeto, in this case may cast an exception of the type ConverterException;

The method getAsString() must convert from objeto for String.

Answering your main question, when implementing Converter you only need to apply the conversion logic to the methods.