Java实现超市管理系统简单的增，删，改，查功能

╰半夏微凉° 2024-03-22 16:36 42阅读 0赞

下面是一个简单的超市管理系统，只实现了简单的增，删，改，查功能

创建一个主类

import java.util.Scanner;
    import java.util.ArrayList;
    
    public class Supermarket {
        public static ArrayList<Product> productList = new ArrayList<>();//创建一个产品动态数组
        public static void main(String[] args) {
            while (true) {
                System.out.println("请选择操作：");
                System.out.println("1. 添加商品" + "\t" + "2. 修改商品" + "\t" + "3. 删除商品" + "\t" + "4. 查询商品");
                System.out.println("请输入选项：");
                Scanner scanner = new Scanner(System.in);
                String choice = scanner.nextLine();
                switch (choice) {
                    case "1" -> addProduct.add();
                    case "2" -> changeProduct.change();
                    case "3" -> deleteProduct.delete();
                    case "4" -> searchProduct.search();
                    default -> System.out.println("无效的选项，请重新输入！");
                }
            }
        }
    }

创建一个Product类

public class Product {
        private String id;//编号
        private String name;//名字
        private double price;//价格
        public Product(){
    
        }
        public Product(String id, String name, double price) {
            this.id = id;
            this.name = name;
            this.price = price;
        }
    
        public String getId() {
            return id;
        }
    
        public void setId(String id) {
            this.id = id;
        }
    
        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 InforShow() {
            return "商品编号：" + id + "  商品名称：" + name + "  商品单价：" + price + "元。";
        }
    }

#### 创建一个addProduct类，实现增加商品 ####

import java.util.Scanner;
    
    public class addProduct {
        //增加商品
        public static void add() {
            Scanner scanner =new Scanner(System.in);
            System.out.println("请输入商品编号：");
            String id = scanner.next();
            System.out.println("请输入商品名称：");
            String name = scanner.next();
            System.out.println("请输入商品单价：");
            double price = scanner.nextDouble();
            Product product = new Product(id, name, price);
            Supermarket.productList.add(product);
            System.out.println("商品添加成功！");
        }
    }

#### 创建一个deleteProduct类，实现删除商品 ####

import java.util.Scanner;
    
    public class deleteProduct {
    //删除商品
        public static void delete() {
            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入要删除的商品编号：");
            String id = scanner.nextLine();
            boolean found = false;
            for (Product product : Supermarket.productList) {
                if (product.getId().equals(id)) {
                    Supermarket.productList.remove(product);
                    found = true;
                    System.out.println("商品删除成功！");
                    break;
                }
            }
            if (!found) {
                System.out.println("未找到该商品！");
            }
        }
    }

#### 创建一个changProduct类，实现更改商品 ####

public class changeProduct {
    //更改商品信息
        public static void change() {
            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入要修改的商品编号：");
            String id = scanner.nextLine();
            boolean found = false;
            for (Product product : Supermarket.productList) {
                if (product.getId().equals(id)) {
                    System.out.println("请输入新的商品名称：");
                    String name = scanner.nextLine();
                    System.out.println("请输入新的商品单价：");
                    double price = scanner.nextDouble();
                    product.setName(name);
                    product.setPrice(price);
                    found = true;
                    System.out.println("商品修改成功！");
                    break;
                }
            }
            if (!found) {
                System.out.println("未找到该商品！");
            }
        }
    }

#### 创建一个searchProduct类，实现查找商品 ####

import java.util.Scanner;
    //查询商品信息
    public class searchProduct {
        public static void search() {
            for (Product product:Supermarket.productList) {
                    System.out.println(product.InforShow());
                }
        }
    }