貨不多說直接代碼

public class car {

private String car_number;

private float car_price;

private float rebate;//折扣

public float getRebate() {

return rebate;

}

public void setRebate(float rebate) {

this.rebate = rebate;

}

public String getCar_number() {

return car_number;

}

public void setCar_number(String car_number) {

this.car_number = car_number;

}

public float getCar_price() {

return car_price;

}

public void setCar_price(float car_price) {

this.car_price = car_price;

}

//設置價格參數

public void carString() {

car_price=1;

car_number="100";

rebate=1;

}

//修改價格

public void modify(float price){

car car=new car();

car.setRebate(price);;

}

public static void main(String agrs[]) {

car car =new car();

car.carString();//設置參數

System.out.println(car.getRebate());

car.modify((float)0.8);//修改

System.out.println(car.getRebate());

}

}

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