package com.tjetc.domain;

public class Product {
public static int index;
private int pid;
private String pname;
private int price;
private int count;

    public Product(int pid, String pname, int price, int count) {
        super();
        this.pid = pid;
        this.pname = pname;
        this.price = price;
        this.count = count;
    }

    //用来显示商品信息
    public void show(){
        System.out.println("编号：" +"\t名称：" +"\t价格：" +  "\t数量：" );
        System.out.println( pid +"\t"  +pname +"\t"  + price +"\t"+ count);
    }


    public int getPid() {
        return pid;
    }

    public int getCount() {
        return count;
    }

    //入库时修改库存数量的set方法
    public void setCount(int count) {
        this.count = this.count+count;
    }
    //出库时修改库存数量的set方法
    public void setCount2(int count) {
        this.count = this.count-count;
    }

    public void setPid(int pid) {
        this.pid = pid;
    }

}

//main
package com.tjetc.test;

import java.util.Scanner;

import com.tjetc.domain.Product;

public class ProductTest {

public static void main(String[] args) {
    // TODO Auto-generated method stub

    // 定义一个数组
    Product[] product = new Product[1];

    Product pro = new Product(0, null, 0, 0);

    Scanner input = new Scanner(System.in); // 用来接收数
    Scanner input1 = new Scanner(System.in);// 用来接收字符串

    int pid;
    String pname;
    int price;
    int count;

    System.out.println("---小商品管理系统------");
    while (true) {
        System.out.println("=================");
        System.out.println("1：录入商品基本信息");
        System.out.println("2:显示全部商品信息");
        System.out.println("3:商品入库");
        System.out.println("4:商品出库");
        System.out.println("5:退出");
        System.out.println("请输入你的选择：");

        int num = input.nextInt();
        switch (num) {
        case 1: {
            int i;
            for (i = 0; i < product.length; i++) {
                System.out.print("请输入商品编号：");
                pid = input.nextInt();
                System.out.print("请输入商品名称：");
                pname = input1.nextLine();
                System.out.print("请输入商品价格：");
                price = input.nextInt();
                System.out.print("请输入商品数量：");
                count = input.nextInt();
                product[i] = new Product(pid, pname, price, count);
            }

        }
            break;

        case 2: {
            for (Product pro1 : product) {
                pro1.show();
            }
        }
            break;

        case 3: {
            System.out.println("请输入需要入库的商品编号：");
            pid = input.nextInt();
            for (Product pro1 : product) {
                if (pid == pro1.getPid()) {
                    pro1.show();
                    System.out.print("请输入要入库的数量：");
                    count = input.nextInt();
                    pro1.setCount(count);
                    pro1.show();
                }

            }

        }
            break;

        case 4: {
            System.out.println("请输入需要出库的商品的编号：");
            pid = input.nextInt();
            for (Product pro2 : product) {
                if (pid == pro2.getPid()) {
                    while (true) {
                        System.out.print("请输入需要出库的数量：");
                        count = input.nextInt();

                        if (count > pro2.getCount()) {
                            System.out.print("出库失败库存小于您的选择");
                        } else {
                            pro2.setCount2(count);
                            pro2.show();
                            break;
                        }

                    }
                }
            }
        }
            break;

        case 5: {
            System.out.println("欢迎下次使用");

        }

        }

        if (num == 5) {
            break;
        }
    }

}

}