库存管理案例

import java.util.Scanner;
class  store
{
    public static void main(String[] args) 
    {
        String[] names={"aaa","bbb","ccc"};
        double[] sizes={13.3,14.0,15.6};
        double[] prices={6988.8,6999.0,4999.5};
        int[] counts={5,10,18};
        Scanner sc=new Scanner(System.in);
        while(true){
            show();
            int choose=sc.nextInt();
            switch(choose){
            case 1:showgoods(names,sizes,prices,counts);
                break;
            case 2:updatecounts(names,sizes,prices,counts);
                break;
            case 3:
                return;
            default:
                System.out.println("您的输入有误，请重新输入");
            }
        }
    }
    public static void show(){
        System.out.println("--------------库存管理-------------");
        System.out.println("1、查看库存清单");
        System.out.println("2、修改商品库存数量");
        System.out.println("3、退出");
        System.out.println("请输入要执行的操作序号：");
    }
    public static void showgoods(String[] names,double[] sizes,double[] prices,int[] counts){
        System.out.println("--------------库存管理-------------");
        System.out.println("品牌型号 尺寸  价格   库存");
            for(int i=0;i<names.length;i++){
                System.out.println(names[i]+"\t"+sizes[i]+"\t"+prices[i]+"\t"+counts[i]);
            }
    }
    public static void updatecounts(String[] names,double[] sizes,double[] prices,int[] counts){
        showgoods(names,sizes,prices,counts);
        System.out.println("请输入您要修改的商品序号：");
        Scanner sc=new Scanner(System.in);
        int number=sc.nextInt();
        System.out.println("请输入修改后的数量：");
        int count=sc.nextInt();
        counts[number-1]=count;
    }
}