java程序代做库存管理系统（用eclipse写）《才能的人，多看一眼啊！》

要求1、自定义商品类，不少于5种商品，每种商品不低于三个属性，至少有一个方法。
2、商品类之间要体现继承关系，使用抽象类或接口。
3、自定义用户类，实现注册登录功能，使用操作文件记录已注册的用户。
4、由已注册用户对商品库存进行增删改查操作并通过文件记录
有才能的人才啊，帮忙看看，非常紧急，希望在2022年5月25日上午9点前写完啊！。

抽象出一个基础类，父类继承extends就有了这个属性的字段

//定义一个父类
public class Human {
    private String name;
    private String sex;
    private int age;
 
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
 
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
 
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
            this.age = age;
    }
 
    public Human(String name, String sex, int age) {
        setName(name);
        setSex(sex);
        setAge(age);
    }
 
    public void eat() {
        System.out.println(name + "在吃饭");
    }
    public void sleep() {
        System.out.println(name + "在睡觉");
    }
}

//一个子类
//类头定义父类的名称，一个类只可以继承一个父类
public class Student extends Human{
    //定义子类的构造方法
    //子类的构造方法的输入参数包含两部分，
    //一部分是用来初始化继承于父类的属性，
    //另一部分是初始化自身所特有的属性
    public Student(String name, String sex, int age, String num, String schoolName) {
        //类的构造方法方法体中，
        //一部分初始化父类的属性，
        //super来调用父类的构造方法来初始化来继承父类的属性
        super(name, sex, age);
        //另一部分初始化自身特有的属性
        setNum(num);
        setSchoolName(schoolName);
 
    }
    //定义子类特有的属性
    private String num;//学号
    private String schoolName;//学校
 
    public String getNum() {
        return num;
    }
 
    public void setNum(String num) {
        this.num = num;
    }
 
    public String getSchoolName() {
        return schoolName;
    }
 
    public void setSchoolName(String schoolName) {
        this.schoolName = schoolName;
    }
//定义子类特有的方法
    public void doHomework() {
        System.out.println(getName() + "在做作业");
    }
    public void exam() {
        System.out.println(getName() + "在考试");
    }
}
 
public class Teacher extends Human {
 
    public Teacher(String name, String sex, int age , String schoolName , String num) {
        super(name, sex, age);
        setSchoolName(schoolName);
        setCourse(num);
    }
 
    private String schoolName;//所在学校
    private String num;//工号
 
    public String getSchoolName() {
        return schoolName;
    }
 
    public void setSchoolName(String schoolName) {
        this.schoolName = schoolName;
    }
 
    public String getCourse() {
        return num;
    }
 
    public void setCourse(String num) {
        this.num = num;
    }
 
    public void teach() {
        System.out.println( getName() + "在上课" );
    }
    public void ready() {
        System.out.println( getName() + "在备课" );
    }
}
 
 

package csdn004;

import java.io.*;
import java.util.Properties;
import java.util.Scanner;

/**
 * 1、自定义商品类，不少于5种商品，每种商品不低于三个属性，至少有一个方法。
 * 2、商品类之间要体现继承关系，使用抽象类或接口。
 * 3、自定义用户类，实现注册登录功能，使用操作文件记录已注册的用户。
 * 4、由已注册用户对商品库存进行增删改查操作并通过文件记录。
 */
public class ShopTest {
    public static void main(String[] args) throws IOException {
        Fruit apple = new Apple();
        apple.name = "苹果";
        apple.age = 2;
        apple.height = "3米";
        System.out.println(apple);
        Fruit banana = new Banana();
        banana.name = "香蕉";
        banana.age = 1;
        banana.height = "10米";
        System.out.println(apple);
        Fruit orange = new Orange();
        orange.name = "橘子";
        orange.age = 1;
        orange.height = "1米";
        System.out.println(orange);
        Fruit watermelon = new Watermelon();
        watermelon.name = "西瓜";
        watermelon.age = 1;
        watermelon.height = "0.20米";
        System.out.println(watermelon);
        Fruit cucumber = new Cucumber();
        cucumber.name = "黄瓜";
        cucumber.age = 1;
        cucumber.height = "0.10米";
        System.out.println(cucumber);


        // 准备文件
        String fileName = "D://user.properties";
        File file = new File(fileName);
        if (!file.exists()) {
            file.createNewFile();
        }
        fileWriterMethod(fileName,"user=admin\npassword=123456");
        file.setWritable(true);
        file.setReadable(true);

        Properties props = new Properties();
        BufferedReader bufferedReader = new BufferedReader(new FileReader(fileName));
        props.load(bufferedReader);
        boolean f = true;
        while (f) {
            System.out.println("0-登录");
            System.out.println("1-注册");
            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入序号");
            int flag = scanner.nextInt();
            if (flag < 0 || flag > 1) {
                System.out.println("对不起，您输入的不是0或者1,请重新输入。");
                continue;
            }
            switch (flag) {
                case 0:
                    System.out.println("请输入用户名：");
                    String name = scanner.next();
                    System.out.println("请输入密码：");
                    String password = scanner.next();
                    String inFileUser = props.getProperty("user");
                    String inFilePassword = props.getProperty("password");
                    if (name.equals(inFileUser) && password.equals(inFilePassword)) {
                        System.out.println("登录成功！");
                        f = false;
                    }else {
                        System.out.println("登录失败，请注册或者检查用户名和密码是否正确");
                    }
                    break;
                case 1:
                    System.out.println("请输入用户名：");
                    String regName = scanner.next();
                    System.out.println("请输入密码：");
                    String regPassword = scanner.next();
                    props.setProperty("user",regName);
                    props.setProperty("password",regPassword);
                    System.out.println("注册成功，请登录");
                    break;
                default:
            }
        }

    }


    /**
     * 方法 1：使用 FileWriter 写文件
     * @param filepath 文件目录
     * @param content  待写入内容
     * @throws IOException
     */
    public static void fileWriterMethod(String filepath, String content) throws IOException {
        try (FileWriter fileWriter = new FileWriter(filepath)) {
            fileWriter.append(content);
        }
    }
}

abstract class Fruit {
    public String name;
    public String height;
    public Integer age;

    @Override
    public String toString() {
        return "Fruit{" +
                "name='" + name + '\'' +
                ", height='" + height + '\'' +
                ", age=" + age +
                '}';
    }
}

/**
 * 苹果
 */
class Apple extends Fruit{
    public Apple() {}
}
/**
 * 香蕉
 */
class Banana extends Fruit{

}
/**
 * 橘子
 */
class Orange extends Fruit {

}

/**
 * 西瓜
 */
class Watermelon extends Fruit {

}

/**
 * 黄瓜
 */
class Cucumber extends Fruit {

}

class User {
    private String name;
    private String password;

    public String getName() {
        return name;
    }

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

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

package com.j2se.myInstances.example6_1;

import java.util.*;

public class Demo {

    private static List<Product> products = new ArrayList<Product>();

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Product product = new Product("iPhone X", "Red", 5999, 3);
        products.add(product);

        int choose;
        while (true) {
            printMenu();
            choose = sc.nextInt();
            if (choose == 1) {
                Product p = new Product();
                System.out.println("产品名称：");
                String pname = sc.next();

                System.out.println("产品颜色：");
                String pcolor = sc.next();

                System.out.println("产品价格：");
                double price = sc.nextDouble();

                System.out.println("产品数量：");
                int pnum = sc.nextInt();

                p.setName(pname);
                p.setColor(pcolor);
                p.setPrice(price);
                p.setNum(pnum);
                addProduct(p);


            } else if (choose == 2) {
                showInfo(products);
                System.out.println("\n");

            } else if (choose == 3) {
                System.out.println("请输入需要删除的商品编号：");
                int i = sc.nextInt();
                delete(i);

            } else {
                System.out.println("输入有误，请重新输入！");
            }

        }

    }

    public static void delete(int i) {
        i--;
        products.remove(i);
        System.out.println("出库成功！\n");
    }

    public static void addProduct(Product p) {
        products.add(p);
        System.out.println("产品已入库\n");
    }

    public static void showInfo(Collection<Product> products) {
        Iterator<Product> it = products.iterator();
        System.out.println("编号\t产品名称\t\t颜色\t价格\t\t库存");
        int n = 1;
        while (it.hasNext()) {
            Product p = it.next();
            System.out.println(n+"\t"+p.getName() + "\t" + p.getColor() + "\t" + p.getPrice() + "\t" + p.getNum());
            n++;
        }
    }

    public static void printMenu() {
        System.out.println("欢迎使用库房管理系统~");
        System.out.println("1. 商品入库");
        System.out.println("2. 商品展示");
        System.out.println("3. 商品出库");
        System.out.println("请输入您要选择的操作：");
    }
}

public class Test {
    public static void main(String[] args) {
        List<Fruit> fruitList = new ArrayList<>();
        init(fruitList);
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名：");
        String name = scanner.next();
        System.out.println("请输入密码：");
        String password = scanner.next();

        if (name.equals("admin") && password.equals("123456")) {
            System.out.println("登录成功！");
            System.out.println("商品如下");
            for(Fruit fruit : fruitList){
                System.out.println(fruit);
            }
        } else {
            System.out.println("登录失败，请注册或者检查用户名和密码是否正确");
        }
    }

    private static void init(List<Fruit> fruitList){
        Fruit apple = new Fruit();
        apple.name = "苹果";
        apple.price = 2;
        apple.color = "红色";
        fruitList.add(apple);
        Fruit banana = new Fruit();
        banana.name = "香蕉";
        banana.price = 1;
        banana.color = "黄色";
        fruitList.add(banana);
        Fruit orange = new Fruit();
        orange.name = "橘子";
        orange.price = 1;
        orange.color = "橙色";
        fruitList.add(orange);
        Fruit watermelon = new Fruit();
        watermelon.name = "西瓜";
        watermelon.price = 1;
        watermelon.color = "绿色";
        fruitList.add(watermelon);
        Fruit cucumber = new Fruit();
        cucumber.name = "黄瓜";
        cucumber.price = 1;
        cucumber.color = "黄色";
        fruitList.add(cucumber);
    }


    static class Fruit {
        public String name;
        public String color;
        public Integer price;



        @Override
        public String toString() {
            return new StringJoiner(", ")
                    .add("name='" + name + "'")
                    .add("color='" + color + "'")
                    .add("price=" + price)
                    .toString();
        }
    }
}

我猜 你是来交作业的