Java基础-基于List集合的简单超市商品管理系统

短命女 2023-01-01 13:58 262阅读 0赞

### Java基础-基于List集合的超市商品管理系统 ###

*   *   *  具体实现：
         *   *  商品实体类：
             *  商品初始化类：
             *  超市业务类：
             *  测试类：
         *  运行效果：
         *   *  商品清单:
             *  添加商品：
             *  删除商品：
             *  修改商品信息：
             *  退出

> 该系统具有：查看所有商品功能，添加商品，删除商品，修改商品信息，退出功能

### 具体实现： ###

#### 商品实体类： ####

public class Goods { 
        private Integer gid;
        private Double price;
        private String name;
    
        public Goods() { 
        }
    
        public Goods(Integer gid, Double price, String name) { 
            this.gid = gid;
            this.price = price;
            this.name = name;
        }
    
        public Integer getGid() { 
            return gid;
        }
    
        public void setGid(Integer gid) { 
            this.gid = gid;
        }
    
        public Double getPrice() { 
            return price;
        }
    
        public void setPrice(Double price) { 
            this.price = price;
        }
    
        public String getName() { 
            return name;
        }
    
        public void setName(String name) { 
            this.name = name;
        }
    
        @Override
        public String toString() { 
            return "Goods{" +
                    "gid=" + gid +
                    ", price=" + price +
                    ", name='" + name + '\'' +
                    '}';
        }
    }

#### 商品初始化类： ####

public class Depository { 
    
        public List<Goods> initGoods(){ 
            Goods goods1 = new Goods(1000,12.0,"笔记本");
            Goods goods2 = new Goods(1001,10.0,"西红柿");
            Goods goods3 = new Goods(1002,20.0,"辣条");
            List<Goods> goods = new ArrayList<>();
            goods.add(goods1);
            goods.add(goods2);
            goods.add(goods3);
            return goods;
        }
    }

#### 超市业务类： ####

public class SupermarketService { 
        private Scanner scanner=new Scanner(System.in);
    
        public void searchGoods(List<Goods> goods){ 
            System.out.println("========商品清单========");
            System.out.println("商品编号\t商品单价\t商品名称");
            for (Goods good :goods) { 
                System.out.println(good.getGid()+"\t"+good.getPrice()+"\t"+good.getName());
            }
        }
    
        public void addGoods(List<Goods> goods){ 
            System.out.println("========增加商品========");
            System.out.print("商品编号：");
            Integer gid = scanner.nextInt();
            System.out.print("商品单价：");
            Double price= scanner.nextDouble();
            System.out.print("商品名称：");
            String name = scanner.next();
    
            Goods goods1 = new Goods(gid, price, name);
            goods.add(goods1);
            System.out.println("添加成功");
        }
    
        public void delGoods(List<Goods> goods){ 
            System.out.println("========删除商品========");
            System.out.print("输入删除的商品编号：");
            int gid = scanner.nextInt();
            for (int i = 0; i < goods.size(); i++) { 
                if(goods.get(i).getGid()==gid){ 
                    goods.remove(goods.get(i));
                    System.out.println("删除成功");
                    break;
                }
            }
        }
    
        public void upGoods(List<Goods> goods){ 
            System.out.println("修改功能：");
            System.out.print("输入你要的修改商品编号ID：");
            int id = scanner.nextInt();
    
            System.out.print("输入新的商品编号：");
            int gid = scanner.nextInt();
            System.out.print("输入商品的单价：");
            double price = scanner.nextDouble();
            System.out.print("输入商品的名称：");
            String name = scanner.next();
    
            for (int i = 0; i < goods.size(); i++) { 
                if (goods.get(i).getGid()==id) { 
                    goods.get(i).setGid(gid);
                    goods.get(i).setPrice(price);
                    goods.get(i).setName(name);
                    System.out.println("修改成功");
                    break;
                }
            }
        }
    }

#### 测试类： ####

public class Test { 
        public static void main(String[] args) { 
            Scanner scanner = new Scanner(System.in);
            Depository depository = new Depository();
            List<Goods> goods = depository.initGoods();
            SupermarketService supermarketService = new SupermarketService();
    
            while (true){ 
                System.out.println("===========超市管理系统===========");
                System.out.println("1:货物清单 2.增加货物 3.删除货物 4.修改货物 5.退出");
                System.out.print("输出你要操作的编号：");
                int id = scanner.nextInt();
    
                if(id==1){ 
                    /*货物清单*/
                    supermarketService.searchGoods(goods);
                }else if(id==2){ 
                    /*增加货物*/
                    supermarketService.addGoods(goods);
                }else if(id==3){ 
                    /*删除货物*/
                    supermarketService.delGoods(goods);
                }else if(id==4){ 
                    /*修改货物*/
                    supermarketService.upGoods(goods);
                }else{ 
                    /*退出*/
                    break;
                }
            }
        }
    }

### 运行效果： ###

#### 商品清单: ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3hpYW96aHV6aHV5YW5n_size_16_color_FFFFFF_t_70]

#### 添加商品： ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3hpYW96aHV6aHV5YW5n_size_16_color_FFFFFF_t_70 1]

#### 删除商品： ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3hpYW96aHV6aHV5YW5n_size_16_color_FFFFFF_t_70 2]

#### 修改商品信息： ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3hpYW96aHV6aHV5YW5n_size_16_color_FFFFFF_t_70 3]

#### 退出 ####

![在这里插入图片描述][20210103115718813.png]

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[20210103115718813.png]: /images/20221120/d99c6d122a4e4f82a18b458bf1b35789.png