// MainForm.java
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import java.util.List;

public final class MainForm extends ActionForm {
  List dwarves = null;
  List mountains = null;

  public List getDwarves() { return dwarves; }
  public void setDwarves(List dwarves){ this.dwarves = dwarves; }
  public List getMountains() { return mountains; }
  public void setMountains(List mountains){ this.mountains = mountains; }

  public void reset(ActionMapping mapping, HttpServletRequest request) {
    dwarves = null;
    mountains = null;
  }

  public ActionErrors validate(ActionMapping mapping,
                               HttpServletRequest request)
  {
    ActionErrors errors = new ActionErrors();
    return errors;
  }
}