开学测试重写

import java.util.Scanner;
public class WarehouseManagement {
    public static void main(String[] args) {
        ItemhouseInformation item []=new ItemhouseInformation[5];
        while(true){
            menu.show();
            int a=0;
            Scanner num = new Scanner(System.in);
            a = num.nextInt();
            if(a==1){
                menu.inmanagement(item);
            }
            else if(a==2){
                menu.xiugai(item);
            }
            else if(a==3){
                menu.chuku(item);
            }
            else if(a==4){
                menu.pandian(item);
                break;
            }
            else{
                System.out.println("输入不正确，请重新输入");
            }
        }
    }
}
class ItemhouseInformation {
    private String itemno,itemname,suppliername,itemhousingtime,shipmenttime,itemhousenumber,itemhouseplace;
    private int itemnumber,outnumber;
    ItemhouseInformation(String itemno,String itemname,String suppliername,String itemhousingtime,String shipmenttime,String itemhousenumber,String itemhouseplace,int itemnumber,int outnumber)
    {
        this.itemno=itemno;
        this.itemname=itemname;
        this.suppliername=suppliername;
        this.itemhousingtime=itemhousingtime;
        this.shipmenttime=shipmenttime;
        this.itemhousenumber=itemhousenumber;
        this.itemhouseplace=itemhouseplace;
        this.itemnumber=itemnumber;
        this.outnumber=outnumber;
    }
    public void setItemno(String s){itemno=s;}
    public String getItemno(){return itemno;}
    public void setItemname(String s){itemname=s;}
    public String getItemname(){return itemname;}
    public void setSuppliername(String s)
      {suppliername=s;}
    public String getSuppliername(){return suppliername;}
    public void setItemhousingtime(String s){itemhousingtime=s;}
    public String getItemhousingtime(){return itemhousingtime;}
    public void setShipmenttime(String s){shipmenttime=s;}
    public String getShipmenttime(){return shipmenttime;}
    public void setItemhousenumber(String s){itemhousenumber=s;}
    public String getItemhousenumber(){return itemhousenumber;}
    public void setItemhouseplace(String s){itemhouseplace=s;}
    public String getItemhouseplace(){return itemhouseplace;}
    public void setItemnumber(int s){itemnumber=s;}
    public int getItemnumber(){return itemnumber;}
    public void setOutnumber(int s){outnumber=s;}
    public int getOutnumber(){return outnumber;}
}
class menu {
    public static void show() {
        System.out.println("***********************************************************\n" +
                "石家庄铁道大学前进22软件开发有限公司\n" +
                "仓库管理系统2022版\n" +
                "***********************************************************\n" +
                "1、商品入库管理\n" +
                "2、商品信息修改\n" +
                "3、商品出库管理\n" +
                "4、仓库盘点管理\n" +
                "**********************************************************");
    }

    public static void inmanagement(ItemhouseInformation item[]) {
        System.out.println("***********************************************************\n" +
                "石家庄铁道大学前进22软件开发有限公司\n" +
                "仓库管理系统2022版\n" +
                "***********************************************************\n" +
                "请依次输入商品编码、商品名称、供货商信息、入库时间、存放仓库号、存放位置信息");
        String num1;
        Scanner num = new Scanner(System.in);
        num1 = num.next();
        int i;
        for (i = 0; i < 5; i++) {
            String args[]=new String[i];
            if (item[i].getItemno().equals(num1)) {
                while (true) {
                    System.out.println("***********************************************************\n" +
                            "石家庄铁道大学前进22软件开发有限公司\n" +
                            "仓库管理系统2022版\n" +
                            "***********************************************************\n");
                    System.out.println("商品编号：" + item[i].getItemno());
                    System.out.println("商品名称：" + item[i].getItemname());
                    System.out.println("供货商信息：" + item[i].getSuppliername());
                    System.out.println("入库时间：" + item[i].getItemhousingtime());
                    System.out.println("存放仓库号：" + item[i].getItemhousenumber());
                    System.out.println("存放位置信息：" + item[i].getItemhouseplace());
                    System.out.println("入库商品数量：" + item[i].getItemnumber());
                    System.out.println("该商品入库操作已完成，是否提交（Y/N）\n" +
                            "**********************************************************");

                    break;
                }
            }
            if (i == 5) {
                System.out.println("请重新输入");
            }
        }
    }



    public static void xiugai(ItemhouseInformation item[]) {
        System.out.println("***********************************************************\n"+
                "石家庄铁道大学前进22软件开发有限公司\n+"+
                "仓库管理系统2022版\n"+
                "***********************************************************\n"+
                "请输入商品编号：XXXXXXXX\n"+
                "**********************************************************");
        String num1;
        Scanner num = new Scanner(System.in);
        num1=num.next();
        int u;
        u=num.nextInt();
        switch(u){
            case 1:

        }
    }
    public static void chuku(ItemhouseInformation item[]){

    }
    public static void pandian(ItemhouseInformation item[]){
        System.out.println("***********************************************************\n"+
                "石家庄铁道大学前进22软件开发有限公司\n"+
                "仓库管理系统2022版\n"+
                "***********************************************************\n");
        int i;
        for (i = 0; i < 5; i++){
            System.out.println("商品编号：" + item[i].getItemno());
            System.out.println("商品名称：" + item[i].getItemname());
            System.out.println("库存数量：");
        }
        String num1;
        Scanner num = new Scanner(System.in);
        num1 = num.next();
    }
}