Java项目实战:一(购物车丶拷贝目录丶线程的交替输出)

package com.cy.gouwuche.car;

import java.util.Objects;

//商品
public class Goods{
    //名字
    private String name;
    //编号
    private String number;
    //价格
    private double price;

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

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Goods goods = (Goods) o;
        return Double.compare(goods.price, price) == 0 && Objects.equals(name, goods.name) && Objects.equals(number, goods.number);
    }

    @Override
    public int hashCode() {
        return Objects.hash(name, number, price);
    }

    @Override
    public String toString() {
        return "Goods{" +