仓管系统（使用数组和类）

需求：

1. 增
2. 查：精准查询（使用货号进行精准查询、使用数量进行查询、使用类型进行查询）、模糊查询（使用名称中的某个字进行查询）
3. 改

package com.wyh.practice;

public class Good {
    int gno;
    String gname;
    String gtype;
    int gnum;

    public Good() {
    }

    public Good(int gno, String gname, String gtype, int gnum) {
        this.gno = gno;
        this.gname = gname;
        this.gtype = gtype;
        this.gnum = gnum;
    }

    public int getGno() {
        return gno;
    }

    public void setGno(int gno) {
        this.gno = gno;
    }

    public String getGname() {
        return gname;
    }

    public void setGname(String gname) {
        this.gname = gname;
    }

    public String getGtype() {
        return gtype;
    }

    public void setGtype(String gtype) {
        this.gtype = gtype;
    }

    public int getGnum() {
        return gnum;
    }

    public void setGnum(int gnum) {
        this.gnum = gnum;
    }
}




package com.wyh.practice;

import java.util.Scanner;

public class WareHouseSystem {
    public static void main(String[] args) {
        Good[] goods = new Good[2];
        Scanner scanner = new Scanner(System.in);

        System.out.println("-----------欢迎使用仓库管理系统（数组、类实现）-------------");
        while (true){
            System.out.println("1.添加货品");
            System.out.println("2.查询单个货品信息");
            System.out.println("3.查询全部货品信息");
            System.out.println("4.查询具有某一特性货品信息");
            System.out.println("5.修改货品信息");
            System.out.println("6.退出系统");

            int chose=scanner.nextInt();
            switch (chose){
                case 1:
                    addGoods(scanner,goods);
                    break;
                case 2:
                    findGoodByGno(scanner , goods);
                    break;
                case 3:
                    findAllGoods(goods);
                    break;
                case 4:
                    findGoodsBy(scanner,goods);
                    break;
                case 5:
                    updateGood(scanner,goods);
                    break;
                case 6:
                    System.out.println("您已退出系统！");
                    return;
                default:
                    System.out.println("非法字符");
                    break;
            }




        }


    }

    private static void findGoodsBy(Scanner scanner, Good[] goods) {
        int subscript=-1;//下标
        System.out.println("选择特性： 1、货品名称（可以是某个字） 2、货品类型  3、货品数量");
        int characteristic=scanner.nextInt();
        switch (characteristic){
            case 1:
                findGoodsByGname(scanner,goods);
                break;
            case 2:
                findGoodsByGtype(scanner,goods);
                break;
            case 3:
                findGoodsByGnum(scanner,goods);
                break;
        }
    }

    private static void findGoodsByGtype(Scanner scanner, Good[] goods) {
        System.out.println("输入商品类型：");
        String type=scanner.next();
        int subscript=-1;
        for (int i=0;i<goods.length;i++){
            if(type.equals(goods[i].getGtype())){
                subscript=i;
                System.out.println("货号："+goods[i].getGno()+"   货名："+goods[i].getGname()+"   类型："+goods[i].getGtype()+"  数量："+goods[i].getGnum());
            }
        }
        if(subscript==-1){
            System.out.println("未找到该类型的商品");
        }
    }

    private static void findGoodsByGnum(Scanner scanner, Good[] goods) {
        System.out.println("输入商品数量：");
        int subscript=-1;
        int num = scanner.nextInt();
        for (int i=0;i<goods.length;i++){
            if(num==goods[i].getGnum()){
                subscript=i;
                System.out.println("货号："+goods[i].getGno()+"   货名："+goods[i].getGname()+"   类型："+goods[i].getGtype()+"  数量："+goods[i].getGnum());
            }
        }
        if(subscript==-1){
            System.out.println("未找到该数量的商品");
        }
    }

    private static void findGoodsByGname(Scanner scanner, Good[] goods) {
        System.out.println("输入商品名称中所含字：");
        String name=scanner.next();
        int subscript=-1;
        for (int i=0;i<goods.length;i++){
            if(goods[i].getGname().contains(name)){
                subscript=i;
                System.out.println("货号："+goods[i].getGno()+"   货名："+goods[i].getGname()+"   类型："+goods[i].getGtype()+"  数量："+goods[i].getGnum());
            }
        }
        if(subscript==-1){
            System.out.println("未找到含有该字符的商品");
        }
    }

    private static void updateGood(Scanner scanner, Good[] goods) {
        int i=findGoodByGno(scanner,goods);
        if(i>=0){
            System.out.println("输入修改后的货品名称：");
            String name=scanner.next();
            System.out.println("输入修改后的货品类型：");
            String type=scanner.next();
            System.out.println("输入修改后的货品数量：");
            int num=scanner.nextInt();
            goods[i].setGname(name);
            goods[i].setGtype(type);
            goods[i].setGnum(num);
        }else{
            return;
        }
    }

    private static int findGoodByGno(Scanner scanner, Good[] goods) {
        System.out.println("输入货号：");
        int subscript=scanner.nextInt();
        boolean flag=true;
        for(int i=0;i<goods.length;i++){
            if(subscript==goods[i].getGno()){
                System.out.println("货号："+goods[i].getGno()+" 名称："+goods[i].getGname()+" 类型："+goods[i].getGtype()+" 数量："+goods[i].getGnum());
                return i;
            }
        }
        if (flag){
            System.out.println("不存在该货号的货品");
        }
        return -1;
    }

    private static void findAllGoods(Good[] goods) {
        System.out.print("货号  ");
        System.out.print("名称  ");
        System.out.print("类型  ");
        System.out.println("数量  ");
        for (int i = 0;i<goods.length;i++){
            System.out.println(" "+goods[i].getGno()+" "+ "  "+ goods[i].getGname() + " "+"  " + goods[i].getGtype() + "  "+"  "+goods[i].getGnum());
        }
    }

    private static void addGoods(Scanner scanner, Good[] goods) {
        for (int i = 0;i<goods.length;i++){
            System.out.println("请输入第"+(i+1)+"个货品货号");
            int gno=scanner.nextInt();
            System.out.println("请输入第"+(i+1)+"个货品名称");
            String gname=scanner.next();
            System.out.println("请输入第"+(i+1)+"个货品类型");
            String gtype=scanner.next();
            System.out.println("请输入第"+(i+1)+"个货品数量");
            int gnum=scanner.nextInt();
            goods[i]=new Good(gno,gname,gtype,gnum);
        }
        System.out.println("添加成功");
    }


}