里面的元素如果不这么写,还可以怎么写?
car [ ] carForRent={new passengerCar(1,"奥迪A4",500,4),
new passengerCar(2,"马自达6",400,4),
new pickUp(3,"皮卡雪6",450,4,2),
new passengerCar(4," 金龙 ",800,20),
new trunk(5,"松花江",400,4),
new trunk(6,"依维柯",1000,20)};
比如 new trunk(6,"依维柯",1000,20)如果不直接在这里写,在子类里写?怎么写?括号里的6,"依维柯",1000,20是对象的属性?