package securitysystem;//大樓類,采取自已的行動，發(fā)生火警:public class Building extends SecurityZone {  public Building(String name) {    super(name);  }  boolean handleNotification(int measurement, Sensor sensor) {       return false;  }  void fireAlarm(SecurityZone zone,Sensor sensor) {    if (zone instanceof Area) {        // Turn on sprinklers in surrounding areas        // Don't call super.fireAlarm because that will turn on the        // sprinkler for the whole warehouse.        System.out.println(this.name+"棟大樓發(fā)生火警");        if (getParent() != null)          getParent().fireAlarm(zone,sensor);        return;    } // if    super.fireAlarm(zone,sensor);}}