快递E栈02（二维数组，面向对象）

具体需求如图：

 代码：

Express：

package com.zzk.senior;

import java.util.Scanner;

public class Express {
    //快递柜只能存100个快递，可以按需更改
    public static ExpressQuality[][] eq = new ExpressQuality[9][9];
    public static void main(String[] args) {
        hei:while(true){
            System.out.println("请选择身份：1.管理员    2.用户（输入1或者2）   3.退出");
            Scanner scanner = new Scanner(System.in);
            try {
                int a = scanner.nextInt();
                switch(a){
                    case 1:{
                        System.out.println("请选择功能：1.快递录入  2.删除快递  3.修改快递  4.查看所有快递");
                        int selectFunction = scanner.nextInt();
                        if(selectFunction == 1){
                            Add add = new Add();
                            add.Add();
                        }else if(selectFunction == 2){
                            Delete delete = new Delete();
                            delete.Delete();
                        }else if(selectFunction == 3){
                            Modify modify = new Modify();
                            modify.Modify();
                        }else if(selectFunction == 4){
                            Search search = new Search();
                            search.search();
                        }else{
                            System.out.println("输入有误");
                        }
                        break;
                    }
                    case 2:{
                        TakeOut takeOut = new TakeOut();
                        takeOut.takeOut();
                        break;
                    }
                    case 3:{
                        break hei;
                    }
                    default:{
                        System.out.println("亲，只能输入1或2哦！");
                        break;
                    }
                }
            }catch (RuntimeException e){
                System.out.println("亲，只能输入数字哦！");//查看所有快递有错误
            }
        }
    }
}

ExpressQuality

package com.zzk.senior;

public class ExpressQuality {
    private int trackingNumber;
    private String company;
    private int pickUpCode;

    public ExpressQuality(){}
    public ExpressQuality(int trackingNumber,String company,int pickUpCode){
        this.trackingNumber = trackingNumber;
        this.company = company;
        this.pickUpCode = pickUpCode;
    }

    public int getPickUpCode() {
        return pickUpCode;
    }

    public void setPickUpCode(int pickUpCode) {
        this.pickUpCode = pickUpCode;
    }

    public String getCompany() {
        return company;
    }

    public void setCompany(String company) {
        this.company = company;
    }

    public int getTrackingNumber() {
        return trackingNumber;
    }

    public void setTrackingNumber(int trackingNumber) {
        this.trackingNumber = trackingNumber;
    }
}

Code

package com.zzk.senior;

import java.util.Random;

public class Code {
    public int code() {
        Random random = new Random();
        return random.nextInt(899999) + 100000;
    }
}

Add

package com.zzk.senior;

import java.util.Scanner;
import static com.zzk.senior.Express.eq;

public class Add {
    public void Add(){
        Scanner scanner = new Scanner(System.in);
        try{
            System.out.println("请输入快递单号：");//未限制6位数
            int trackingNumber = scanner.nextInt();
            System.out.println("请输入快递公司：");
            String company = scanner.next();
            ExpressQuality expressQuality = new ExpressQuality();//每次调用都会产生一次对象
            expressQuality.setTrackingNumber(trackingNumber);
            expressQuality.setCompany(company);
            //生成取件码,并且取件码不能重复
            Code c = new Code();
            int cd = c.code();
            hei:for(int i = 0;i<eq.length;i++){
                for(int j = 0;j<eq.length;j++){
                    if(eq[i][j] == null){
                        break hei;
                    }
                    if(eq[i][j].getPickUpCode() == cd){
                        cd = c.code();
                    }
                }
            }

            expressQuality.setPickUpCode(cd);

            haha:for(int i = 0;i<eq.length+1;i++){
                for(int j = 0;j<eq.length+1;j++){
                    if(eq[i][j] == null){
                        eq[i][j] = expressQuality;
                        break haha;
                    }
                }
            }
            System.out.println("快递已存入，取件码是："+cd);
        }catch (RuntimeException e){
            System.out.println("亲，请输入数字快递单号！");
        }

    }

}

Delete

package com.zzk.senior;

import java.util.Scanner;
import static com.zzk.senior.Express.eq;

public class Delete {
    public void Delete(){
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要删除的快递单号：");
        try{
            int tracking1 = scanner.nextInt();
            hei:for(int i = 0;i<eq.length;i++) {
                for(int j = 0;j<eq.length;j++){
                    if(eq[i][j] == null) {
                        if(i == 8 || j == 8){
                            System.out.println("未找到快递");
                        }
                        continue;
                    }else if(eq[i][j].getTrackingNumber() == tracking1) {
                        eq[i][j] = null;
                        System.out.println("删除成功");
                        break hei;
                    }
                }
            }
        }catch (RuntimeException e){
            System.out.println("亲，请输入正确的快递单号！");
        }
    }
}

Modify

package com.zzk.senior;

import java.util.Scanner;
import static com.zzk.senior.Express.eq;

public class Modify {
    public void Modify(){
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入要修改的快递单号：");
        try{
            int tracking1 = scanner.nextInt();
            hei:for(int i = 0;i<eq.length;i++) {
                for(int j = 0;j<eq.length;j++){
                    ExpressQuality expressQuality = new ExpressQuality();
                    if(eq[i][j] == null) {
                        if(i == 8 || j == 8){
                            System.out.println("未找到快递");
                        }
                        continue;
                    }else if(eq[i][j].getTrackingNumber() == tracking1) {
                        System.out.println("请输入新的快递单号：");
                        int tracking3 = scanner.nextInt();
                        System.out.println("请输入新的公司名称：");
                        String company1 = scanner.next();
                        //新的取件码
                        Code c = new Code();
                        expressQuality.setPickUpCode(c.code());
                        expressQuality.setTrackingNumber(tracking3);
                        expressQuality.setCompany(company1);
                        eq[i][j] = expressQuality;
                        System.out.println("修改成功");
                        break hei;
                    }
                }
            }
        }catch (RuntimeException e){
            System.out.println("亲，请输入6位数快递单号！");
        }

    }
}

Search

package com.zzk.senior;

import static com.zzk.senior.Express.eq;

public class Search {
    public void search(){
        System.out.println("所有快递信息如下：");
        System.out.println("快递单号    公司名称    取件码");
        for(int i = 0;i<eq.length;i++){
            for(int j = 0;j<eq.length;j++){
                if (eq[i][j] != null) {
                    System.out.println(eq[i][j].getTrackingNumber() + "         " + eq[i][j].getCompany() + "         " + eq[i][j].getPickUpCode());
                }else if(eq[i][j] == null){
                    continue; //跳出循环
                }
            }
        }
    }
}

TakeOut

package com.zzk.senior;

import java.util.Scanner;
import static com.zzk.senior.Express.eq;

public class TakeOut {
    public void takeOut(){
        System.out.println("请输入取件码：");
        Scanner scanner = new Scanner(System.in);
        try{
            int tracking1 = scanner.nextInt();
            hei:for(int i = 0;i<eq.length;i++) {
                for(int j = 0;j<eq.length;j++){
                    if(eq[i][j] == null) {
                        if(i == 8 || j == 8){
                            System.out.println("未找到快递");
                        }
                        continue;
                    }else if(eq[i][j].getPickUpCode() == tracking1) {
                        eq[i][j] = null;
                        System.out.println("取件成功");
                        break hei;
                    }
                }
            }
        }catch (RuntimeException e){
            System.out.println("亲，请输入6位数取件码！");
        }
    }
}

实现效果：