java基础案例6-1库存管理系统_java库存管理系统案例

package com.itheima;
 
import java.util.*;
 
import static java.lang.System.exit;
 
public class Main{
    static Scanner in = new Scanner(System.in);
    static LinkedList link = new LinkedList();
    public static void main(String[] args)
    {
        while(true) {
            menu();
            input();
        }
    }
 
    static void menu()
    {
        System.out.println("--------------库存管理系统--------------");
        System.out.println("(1)商品入库               (2)商品显示功能");
        System.out.println("(3)删除商品               (4)退出");
    }
 
    static void input()
    {
        System.out.print("请输入需要的操作：");
        int choose = in.nextInt();
        switch(choose)
        {
            case 1: infood();break;
            case 2: showfood();break;
            case 3: delfood(); break;
            case 4: exit(0);
        }
    }
 
    static void infood(){
        while(true)
        {
            System.out.print("是否要录入商品（是输入1/否输入0)：");
            int d = in.nextInt();
            if(d == 1) {
                String[] a = new String[4];
                String ch;
                System.out.print("请输入商品的名称：");
                a[0] = in.next();
                System.out.print("请输入商品的颜色：");
                a[1] = in.next();
                System.out.print("请输入商品的价格：");
                a[2] = in.next();
                System.out.print("请输入商品的数量：");
                a[3] = in.next();
                ch = "名称：" + a[0] + "  颜色：" + a[1] + "  价格：" + a[2] + "  数量：" + a[3];
                link.add(ch);
                System.out.println("商品录入成功");
                showfood();
            }
            else
                return;
        }
    }
 
    static void showfood(){
        if(link.isEmpty())
        {
            System.out.println("库房没有商品");
            return;
        }
        System.out.println("所有商品如下：");
        int j = 0;
        for(Object str : link)
        {
            System.out.print("编号(" + ++j + "): " );
            System.out.println(str);
        }
    }
 
    static void delfood(){
        while(true) {
            System.out.print("请输入需要删除的商品编号(输入0退出)：");
 
            int num = in.nextInt();
            if(num == 0)
                break;
            link.remove(num - 1);
         }
        showfood();
    }
}