public static void main(String[] args){

     CAR[] cars ={new passengerCAR("金龙",500,4),

    new passengerCAR("奥迪A4",800,4),

    new passengerCAR("马自达6",600,4),

    new Trunk("松花江",750,5),

    new Trunk("依维柯",650,3), 

    new pickUP("皮卡雪6",750,4,2)

    };

     for (CAR car : cars) {

System.out.println(car);

}

运行结果是

COM.DIDIZHUCHE.passengerCAR@15db9742

COM.DIDIZHUCHE.passengerCAR@6d06d69c

COM.DIDIZHUCHE.passengerCAR@7852e922

COM.DIDIZHUCHE.Trunk@4e25154f

COM.DIDIZHUCHE.Trunk@70dea4e

COM.DIDIZHUCHE.pickUP@5c647e05

在线等