JSF: Navigating between JSF pages programmatically

public class NavigationHandler {

  public void navigate(String navigateTo){

     FacesContext fctx = FacesContext.getCurrentInstance();

     Application application = fctx.getApplication();

     NavigationHandler navHandler = application.getNavigationHandler();

     navHandler.handleNavigation(fctx,null, "name of navigation case");

  }

}