16.3.3. Faces messages

The facesMessages component is a convenient way to display success or failure messages to the user. The functionality we just described also works for Faces messages: 
@Name("hello") 
@Stateless 
public class HelloBean implements Hello { 
  @In FacesMessages facesMessages; 
  public String sayIt() { 
    facesMessages.addFromResourceBundle("Hello"); 
  } 
}
This will display Hello, Gavin King or G'day, Gavin, depending upon the user's locale.