java实现简单超市管理系统

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

  @Override
  public String toString() {
    return "Goods{" +
        "number='" + number + '\'' +
        ", price=" + price +
        ", name='" + name + '\'' +
        '}';
  }

  public String getNumber() {
    return number;
  }

  public void setNumber(String number) {
    this.number = number;
  }

  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;
  }

  public Goods() {
  }

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

import java.util.ArrayList;
import java.util.Iterator;

public class CargoList {//货物清单
  public void cargoList(ArrayList<Goods> list){
    System.out.println("============货物清单============");
    Iterator<Goods> it = list.iterator();
    while (it.hasNext()){
      System.out.println(it.next());
    }
  }
}

import java.util.ArrayList;
import java.util.Scanner;

public class IncreaseCargo {//增加货物
  static Scanner sc=new Scanner(System.in);
  public void add(ArrayList list){
    System.out.println("选择的是商品添加功能");
    System.out.println("输出商品编号ID");
    String num=sc.next();
    System.out.println("输入商品单价");
    double price=sc.nextDouble();
    System.out.println("输入商品名称");
    String name=sc.next();
    Goods g1 = new Goods(num, price, name);
    list.add(g1);
    System.out.println("添加成功");
  }
}

import java.util.ArrayList;
import java.util.Scanner;

public class DeleteGoods {//删除商品
  static Scanner sc=new Scanner(System.in);
  public void delete(ArrayList<Goods> list){
    System.out.println("选择的是删除功能");
    System.out.println("输入要删除的商品编号ID");
    String num=sc.next();
    for (int i = 0; i <list.size() ; i++) {
      if (list.get(i).getNumber().equals(num)){
        list.remove(list.get(i));
      }
    }
    System.out.println("删除成功");

  }
}

import java.util.ArrayList;
import java.util.Iterator;
import java.util.Scanner;

public class ModificationOfGoods {//修改货物
  static Scanner sc=new Scanner(System.in);
  public void modify(ArrayList<Goods> list){
    System.out.println("选的是修改功能");
    System.out.println("输入你要修改的商品编号ID");
    String num=sc.next();
    System.out.println("输入新的商品编号");
    String num1=sc.next();
    System.out.println("输入商品单价");
    double price=sc.nextDouble();
    System.out.println("输入商品名称");
    String name=sc.next();
    for (int i = 0; i <list.size() ; i++) {
      if (num.equals(list.get(i).getNumber())){
        list.set(i,new Goods(num1,price,name));
      }
    }
    System.out.println("修改成功");


  }
}

import java.util.ArrayList;
import java.util.Scanner;


public class SuperMarket {
  static Scanner sc = new Scanner(System.in);
  public static void main(String[] args) {
    ArrayList<Goods> list = new ArrayList<>();
    list.add(new Goods("1000",10,"笔记本"));
    list.add(new Goods("1001",2,"西红柿"));
    list.add(new Goods("1002",5,"辣条"));
    //list.get(1).setName("hhhhhh");
    //System.out.println(list.get(1).getName());
    System.out.println("============超市管理系统============");
    while (true){
      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.println("请输入你要操作的编号：");
      String num=sc.next();
      if (num.equals("1")){
        CargoList cl = new CargoList();
        cl.cargoList(list);
      }else if (num.equals("2")){
        IncreaseCargo ic = new IncreaseCargo();
        ic.add(list);
      }else if (num.equals("3")){
        DeleteGoods dg = new DeleteGoods();
        dg.delete(list);
      }else if (num.equals("4")){
        ModificationOfGoods mog = new ModificationOfGoods();
        mog.modify(list);
      }else if (num.equals("5")){
        System.out.println("欢迎下次光临");
        break;
      }else {
        System.err.println("输入错误，请重新输入！");
      }
      System.out.println();
      System.out.println();
    }
  }
}