日常笔记

飞鸽快递系统项目代码：

package edu.xcdq;

import java.util.Scanner;

public class Main {  Scanner scanner = new Scanner(System.in);
  public Main(){

  }
   public  void  menu(){
       System.out.println("===========================");
       System.out.println("\t\t欢迎使用快递系统\t\t");
       System.out.println("1 用户注册");
       System.out.println("2 登录系统");
       System.out.println("3 商品查看册");
       System.out.println("4 退出系统");
       System.out.println("请输入:");
       int funNo = scanner.nextInt();
       switch (funNo){
           case 1:
               //用户注册
               break;

           case 2:
               //登录系统
               break;
           case 3:
             //商品查看
             break;
           case 4:
              //退出系统
           default:
               scanner.close();            //关闭扫描器资源
               System.exit(0);       //   0 正常退出   非0 正常的中断退出
       }
   }
    public static void main(String[] args) {

      new Main().menu();


    }

}

package edu.xcdq.service;

import edu.xcdq.beans.Customer;

import java.util.Scanner;

public class LoginService {
    private Scanner scanner = null;

    private LoginService(Scanner scanner) {
        this.scanner = scanner;
    }


    //注册
    public void register(Scanner scanner) {

        System.out.println("请输入用户的编号:");
        String clientId = scanner.next();
        System.out.println("请输入用户名的密码:");
        String pwd = scanner.next();
        System.out.println("请输入用户名:");
        String name = scanner.next();
        System.out.println("请输入年龄:");
        int age = scanner.nextInt();
        System.out.println("请输入性别:");
        String sex = scanner.next();
        System.out.println("请输入手机号:");
        String phone = scanner.next();

        Customer customer = Customer.builder().setCustomerId(clientId).Pwd(pwd);
        customer.setName(name);
        customer.setPhone(phone);
        customer.setSex(sex);


    }
}

package edu.xcdq.beans;

public class Courier extends person{
    private String courierId;
public  Courier(){

}
public Courier(String courierId,String pwd){
    super.setPwd(pwd);
    this.courierId = courierId;
}

public  Courier(String courierId,String name,String sex,int age,String pwd){

    super(name,age,pwd,sex);      //super只能出现方法第一行
    this.courierId = courierId;
}


    @Override
    public String toString() {
        return "Courier{" +
                "courierId='" + courierId + '\'' +
                ", name='" + getName() + '\'' +
                ", age='" + getAge() + '\'' +
                ", pwd='" + getPwd() + '\'' +
                ", sex='" + getSex() + '\'' +
                '}';
    }
}

 public  Customer(){

    }
    //构建器  用来构建一个对象
    public  static  Customer builder(){
        return  new Customer();
    }
    public String getCustomerId() {
        return customerId;
    }


    public Customer setCustomerId(String customerId) {
        this.customerId = customerId;
        return  this;
    }
    public Customer Pwd (String pwd) {
        super.setPwd(pwd);
        //this.pwd = pwd;
      return this;
    }



    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    @Override
    public String toString() {
        return "Customer{" +
                "customerId='" + customerId + '\'' +
                ", phone='" + phone + '\'' +
                ", name='" + getName() + '\'' +
                ", age='" + getAge() + '\'' +
                ", pwd='" + getPwd() + '\'' +
                ", sex='" + getSex() + '\'' +

                '}';
    }
}

package edu.xcdq.beans;

public class person {
private String name;
private  int age;
private String pwd;
private  String sex;

public person(){

}
public person(String name,int age,String pwd,String sex){
    this.name = name;
    this.age = age;
    this.pwd = pwd;
    this.sex = sex;

}
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }
}

package edu.xcdq.tools;

import edu.xcdq.beans.Customer;

import java.util.Arrays;

public class CustomerData {
    private  static  int SIZE = 10;     //一共能存储的用户数
    private  static  int COUNT = 0;     //已经存储的用户
    private  static Customer[]CUSTOMERDATA = new  Customer[SIZE];

    public  static  void  save(Customer customer){
        if (COUNT ==SIZE){  //数组满了，扩容为原来的二倍

          CUSTOMERDATA =  Arrays.copyOf(CUSTOMERDATA,SIZE*2);
            SIZE *=2;
        }
        for (int i = 0; i <CUSTOMERDATA.length ; i++) {
            if (null==CUSTOMERDATA[i]){
                CUSTOMERDATA[i] = customer;
                COUNT++;
                return;

            }

        }

    }

    //从数组中查询用户的信息
public  static Customer get(String customerId,String pwd){

        for (Customer customer: CUSTOMERDATA){
            if (customer.getCustomerId().equals(customerId) && customer.getPwd().equals(pwd)){
                return customer;
            }

        }
        return null;
}
   //只根据id查询用户
public  static Customer get(String customerId){
        for (Customer customer:CUSTOMERDATA){
            if (customerId.equals((customer.getCustomerId()))){
                return customer;
            }
        }
        return null;
}


}