Navigation Between Pages

• When the form is submitted, the JSF engine calls zone.addCity()

  public class TimeZoneBean
  {
     . . .
     public String addCity()
     {
        if (zone == null) return "unavailable";
        // Add the city
        . . .
        return "available";
     }
  }

• If next page doesn't depend on a computation, you set the action attribute of the button to a fixed outcome string

  <h:commandButton value="Back" action="back"/>