The @FacesConverter annotation allows you to define a class as a converter.

  @FacesConverter(value="myconverter", forClass="mypackage.MyClass")
  public class MyConverter implements Converter {
    ...
  }

Note that this is equivalent to registering the component in the faces-config.xml using the following snippet.

  <converter>
    <converter-id>myconverter</converter-id>
    <converter-for-class>mypackage.MyClass</converter-for-class>
    <converter-class>MyConverter</converter-class>
  </component>