Java 使用继承和重写父类方法写一个商品入库案例

package 练习.商品入库;import java.util.Scanner;
// 抽象手机类
public abstract class Phone {//测试方法public static void main(String[] args){// 华为手机huawei h = new huawei();h.setName("华为P40");h.setPrice(1999.99);h.setConfiguration("8+128GB晓龙888");// 小米手机xiaomi x = new xiaomi();x.setName("小米10X");x.setPrice(1899.99);x.setConfiguration("8+256GB晓龙8Gen1");// 华为入库System.out.println("请输入"+h.getName()+"手机的库存：");Scanner sc = new Scanner(System.in);int count =sc.nextInt();h.setStorage(count);// 小米入库System.out.println("请输入"+x.getName()+"手机的库存：");x.setStorage(sc.nextInt());// 显示手机信息以及库存总价值金额System.out.println("当前所有商品剩余库存数据如下：");System.out.println("品牌："+h.getName()+"\t价格："+h.getPrice()+"元\t配置："+h.getConfiguration()+"\t\t剩余库存："+h.getStorage()+"部\t剩余库存总价值："+h.Sum()+"元");System.out.println("品牌："+x.getName()+"\t价格："+x.getPrice()+"元\t配置："+x.getConfiguration()+"\t剩余库存："+x.getStorage()+"部\t剩余库存总价值："+x.Sum()+"元");}private String name;private double price;private String configuration;private int storage;private double sum;// 总价值金额public abstract double Sum();public Phone(){}public Phone(String name, double price, String configuration, int storage, double sum) {this.name = name;this.price = price;this.configuration = configuration;this.storage = storage;this.sum = sum;}public String getName() {return name;}public void setName(String name) {this.name = name;}public double getPrice() {return price;}public void setPrice(double price) {this.price = price;}public String getConfiguration() {return configuration;}public void setConfiguration(String configuration) {this.configuration = configuration;}public int getStorage() {return storage;}public void setStorage(int storage) {this.storage = storage;}public double getSum() {return sum;}public void setSum(double sum) {this.sum = sum;}
}// 小米类
class xiaomi extends Phone {public xiaomi(){}public xiaomi(String name, double price, String configuration, int storage, double sum) {super(name, price, configuration, storage, sum);}@Overridepublic double Sum() {setSum(getStorage()*getPrice());return getSum();}
}
// 华为类
class huawei extends Phone {public huawei(){}public huawei(String name, double price, String configuration, int storage, double sum) {super(name, price, configuration, storage, sum);}@Overridepublic double Sum() {setSum(getStorage()*getPrice());return getSum();}
}