超市管理系统

超市类代码：

package com.zhou.supermarket;

import java.util.Scanner;

public class SuperMarket {
    //很多商品
    private Goods[] goodsList = new Goods[10];
    //超市名字
    private String name;
    //记录商品个数
    private int count;

    public void initizlazation() {
        Goods g1 = new Goods();
        g1.setCode("9527");
        g1.setName("苹果");
        g1.setPrice(9.9);
        goodsList[0] = g1;

        Goods g2 = new Goods();
        g2.setCode("9528");
        g2.setName("柠檬");
        g2.setPrice(5.0);
        goodsList[1] = g2;

        Goods g3 = new Goods();
        g3.setCode("9529");
        g3.setName("蓝莓");
        g3.setPrice(9.2);
        goodsList[2] = g3;
    }

    public SuperMarket() {

    }

    public SuperMarket(String name) {
        goodsList = new Goods[10];
        this.name = name;
        initizlazation();
        count = 3;
    }

    public void menu() {
        System.out.println("==================== 欢迎光临【" + name + "超市】 ====================");
        System.out.print("1：商品列表 ");
        System.out.print("2：添加商品 ");
        System.out.print("3：删除商品 ");
        System.out.println("4：修改商品");
    }

    //展示商品列表
    public void show() {
        System.out.println("货物清单");
        System.out.println("==================== 商品库存清单 ====================");
        System.out.println("商品编号       商品名称       商品单价");
        for (int i = 0; i < goodsList.length; i++) {
            Goods g = goodsList[i];
            if (g != null) {
                System.out.println(g.getCode() + "           " + g.getName() + "            " + g.getPrice());
            }
        }
    }

    //添加商品
    public void addGoods() {
        if (count > 9) {
            System.out.println("仓库已满，sorry~~");
            return;
        }
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入商品编号：");
        String code = scanner.next();
        System.out.println("请输入商品名称：");
        String name = scanner.next();
        System.out.println("请输入商品价格：");
        double price = scanner.nextDouble();

        Goods g = new Goods(code, name, price);
        goodsList[count++] = g;
        /*g.setCode(code);
        g.setName(name);
        g.setPrice(price);*/
    }

    //删除商品
    public void delGoods() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要删除的商品编号;");
        String code = scanner.next();
        boolean flag = false;
        for (int i = 0; i < count; i++) {
            Goods g = goodsList[i];
            if (code.equals(g.getCode())) {
                System.out.println("您输入的商品编号为：" + g.getCode() + " 名称：" + g.getName() + " 价格：" + g.getPrice());
                System.out.println("您确认删除该商品吗？ true或false");
                boolean judge = scanner.nextBoolean();
                if (judge == false) {
                    System.out.println("那就算了叭");
                } else if (judge) {
                    goodsList[i] = null;
                    flag = true;
                    if (i != count - 1) {
                        goodsList[i] = goodsList[i + 1];
                    } else {
                        goodsList[i] = null;
                    }
                }
            }
        }
        if (flag) {
            count--;
            System.out.println("删除成功！");
        } else {
            System.out.println("您输入的序号有误，删除失败！");
        }
    }

    //修改商品
    public void updateGoods() {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要修改商品信息的编号：");
        String code = scanner.next();
        boolean flag = false;
        Goods goods = null;
        for (int i = 0; i < count; i++) {
            Goods g = goodsList[i];
            if (code.equals(g.getCode())) {
                flag = true;
                goods = g;
                break;
            }
        }
        if (flag) {
            System.out.println("您输入的商品编号为：" + goods.getCode() + " 名称：" + goods.getName() + " 价格：" + goods.getPrice());
            System.out.println("您确认修改该商品的信息吗？ true或false");
            boolean judge = scanner.nextBoolean();
            if (judge == false) {
                System.out.println("那就算了吧");
            } else if (judge) {
                System.out.println("请输入要修改的商品名称：");
                String name = scanner.next();
                System.out.println("请输入要修改的商品价格：");
                double price = scanner.nextDouble();
                goods.setName(name);
                goods.setPrice(price);
                System.out.println("恭喜你！修改成功");
            }
        } else {
            System.out.println("铺gai啦哩，修改失败！");
        }

    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }


}

商品类代码：

package com.zhou.supermarket;

public class Goods {
    private String code;
    private String name;
    private double price;

    public Goods() {

    }

    public Goods(String code, String name, double price) {
        this.code = code;
        this.name = name;
        this.price = price;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getCode() {
        return code;
    }

    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;
    }
}

测试类代码：

package com.zhou.supermarket;

import java.util.Scanner;

public class SuperMarkerTest {
    public static void main(String[] args) {
        SuperMarket superMarket = new SuperMarket("白昼");
        Scanner scanner = new Scanner(System.in);
        while (true) {
            superMarket.menu();
            System.out.print("请输入对应的功能编号：");
            int num = scanner.nextInt();
            System.out.println("---------------------");
            if (num == 1) {
                superMarket.show();
            } else if (num == 2) {
                superMarket.addGoods();
            } else if (num == 3) {
                superMarket.delGoods();
            } else if (num == 4) {
                superMarket.updateGoods();
            } else {
                System.out.println("您输入的功能编号有误");
            }
        }
    }
}