project--客户信息管理系统

package com.xuanxiao.customer;

/**
 * @see Customer为实体类，用来封装客户信息
 * @author mn Email:1494349721@qq.com
 * @version
 * @data 2020年11月11日
 */

public class Customer {
    
    private String name; //客户姓名
    private String gender; //性别
    private int age; //年龄
    private String phone; //电话号码
    private String email; //电子邮箱
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String getPhone() {
        return phone;
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public Customer() {
    }
    
    public Customer(String name, String gender, int age, String phone, String email) {
        this.name = name;
        this.gender = gender;
        this.age = age;
        this.phone = phone;
        this.email = email;
    }
        
}

package com.xuanxiao.server;

import com.xuanxiao.customer.Customer;

/**
 * @see CustomerList是Customer對象的管理模塊，内部使用Customer數組，並提供相應的添加，刪除，修改和遍歷操作。
 * @author mn Email：1494349721@qq.com
 * @version
 * @data 2020年11月11日
 *
 */


public class CustomerList {

    private Customer[] customers; //用来保存客户对象的数组
    private int total; //记录已保存客户对象的数量
    
    /**
     * @see 用来初始化customers数组的构造器
     * @param totleCoustmer：制定数组的长度的参数
     */
    public CustomerList(int totalCustomer) {
        customers = new Customer[totalCustomer];
    }
    /**
     * @see 将指定的客户添加到数组中
     * @author mn
     * @param customer
     * @return true:添加成功 false:添加失败
      */
    public boolean addCustomer(Customer customer) {
        
        if(total >= customers.length) {
            return false;
        }
        customers[total] = customer;
        total ++;
        
        //或者 customers[total++] = customer;
        return true;
    }
    
    /**
     * @see 修改指定索引位置的客户信息
     * @author mn
     * @param index
     * @param cust
     * @return true:修改成功 false:修改失败
     */
    public boolean replaceCustomer(int index,Customer cust) {
        
        if(index < 0 || index >= total) {
            return false;
        }else {
            customers[index] = cust;
            return true;
        }
    }
    
    /**
     * @see 删除指定位置的客户
     * @author mn
     * @param index
     * @return true:删除成功 false:删除失败
     */
    public boolean deleteCustomer(int index) {
        
        if(index < 0 || index >= total) {
            return false;
        }
        for(int i = index;i < total - 1;i++) {
            customers[i] = customers[i+1];
        }
        
        //最后一个有数据的元素置空
        customers[total-1] = null;
        total --;
        //或者 customers[--total] = null;
        return true;
    }
    
    /**
     * @see 获取所有的客户信息
     * @author mn
     * @return
     */
    public Customer[] getAllCustomers() {
        
        Customer[] custs = new Customer[total];
        for(int i = 0;i < total;i++) {
            custs[i] = customers[i];
        }
        return custs;
    }
    
    /**
     * @see 获取指定索引位置上的客户
     * @author mn
     * @param index
     * @return 找到元素返回；未找到返回null
     */
    public Customer getCustomer(int index) {
        
        if(index < 0 || index >= total) {
            return null;
        }
        return customers[index];
        
    }
    
    /**
     * @see 获取存储的客户的数量
     * @author mn
     * @return
     */
    public int getTotal() {
        return total;
    }
 }

package com.xuanxiao.view;

import java.util.Scanner;

import com.xuanxiao.customer.Customer;
import com.xuanxiao.server.CustomerList;

/**
 * @see CustomerView为主模块，负责菜单的显示和处理用户操作
 * @author mn Email:1494349721@qq.com
 * @version
 * @data 2020年11月11日
 */
public class CustomerView {

    private CustomerList customerList = new CustomerList(10);
    
    public CustomerView() {
        //Customer customer = new Customer("马成功", ‘男‘, 21, "17345625812", "466962353@qq.com");
        //customerList.addCustomer(customer);
    }

    /**
     * @see 显示菜单
     */
    public void enterMainView() {

        boolean isFlag = true;
        while (isFlag) {
            System.out.println("----------客户信息管理软件----------");
            System.out.println("-           1. 添加客户                     -");
            System.out.println("-           2. 修改客户                     -");
            System.out.println("-           3. 删除客户                     -");
            System.out.println("-           4. 客户列表                     -");
            System.out.println("-           5. 退出系统                     -");
            System.out.println("-----------------------------------");
            System.out.println();
            System.out.print(" 请选择（1-5）：");

            Scanner input = new Scanner(System.in);
            int choose;
            choose = input.nextInt();
            if (choose != 1 && choose != 2 && choose != 3 && choose != 4 && choose != 5) {
                System.out.println("输入信息有误，请重新输入！");
            }
            switch (choose) {
            case 1:
                addNewCustomer();
                break;
            case 2:
                modifyCustomer();
                break;
            case 3:
                deleteCustomer();
                break;
            case 4:
                listAllCustomers();
                break;
            case 5:
                System.out.print("确定是否退出（退出11/不退00）：");
                Scanner input1 = new Scanner(System.in);
                int exit;
                exit = input1.nextInt();
                if (exit == 11) {
                    isFlag = false;
                }
            }

        }

    }

    /**
     * @see 添加客户的操作
     */
    public void addNewCustomer() {
//        System.out.println("添加客户的操作");
        System.out.println("-----------------客户列表------------------");
        Scanner scanner = new Scanner(System.in);
        System.out.print("姓名：");
        String name;
        name = scanner.nextLine();
        System.out.print("性别：");
        String gender;
        gender = scanner.nextLine();
        System.out.print("年龄：");
        Scanner scanner1 = new Scanner(System.in);
        int age;
        age = scanner1.nextInt();
        System.out.print("电话号码：");
        String phone;
        phone = scanner.nextLine();
        System.out.print("邮箱：");
        String email;
        email = scanner.nextLine();
        
        //将上面的数据封装到对象中
        Customer customer = new Customer(name,gender,age,phone,email);
        boolean isSuccess = customerList.addCustomer(customer);
        if(isSuccess) {
            System.out.println("-----------------添加完成------------------");
        }else {
            System.out.println("-----------------目录已满,添加失败--- -----");
        }
    }

    /**
     * @see 修改客户的操作
     */
    public void modifyCustomer() {
//        System.out.println("修改客户的操作");
        System.out.println("-----------------添加完成------------------");
        Customer cust;
        int number;
        for (;;) {
            System.out.println("请选择待修改的客户编号（-1退出）：");
            Scanner input = new Scanner(System.in);
            
            number = input.nextInt();
            if (number == -1) {
                return;
            }
            cust = customerList.getCustomer(number-1);
            if(cust == null) {
                System.out.println("无法找到指定的客户！");
            }else {
                break;
            }
        }
        //找到了指定的客户，修改客户信息
        Scanner input = new Scanner(System.in);
        Scanner input1 = new Scanner(System.in);
        System.out.println("姓名(" + cust.getName() + "):");
        String name;
        name = input.nextLine();
        System.out.println("性别(" + cust.getGender() + "):");
        String gender;
        gender = input.nextLine();
        System.out.println("年龄(" + cust.getAge() + "):");
        int age;
        age = input1.nextInt();
        System.out.println("电话号码(" + cust.getPhone() + "):");
        String phone;
        phone = input.nextLine();
        System.out.println("邮箱(" + cust.getEmail() + "):");
        String email;
        email = input.nextLine();
        
        Customer newcust = new Customer(name, gender, age, phone, email);
        boolean isReplace = customerList.replaceCustomer(number-1, newcust);
        if(isReplace) {
            System.out.println("-----------------修改完成------------------");
        }else {
            System.out.println("-----------------修改失败------------------");
        }
        
    }

    /**
     * @see 删除客户的操作
     */
    public void deleteCustomer() {
//        System.out.println("删除客户的操作");
        System.out.println("-----------------删除客户------------------");
        Scanner input = new Scanner(System.in);
        int number;
        for (;;) {
            System.out.println("请选择待修改的客户编号（-1退出）：");
            number = input.nextInt();
            if (number == -1) {
                return;
            }
            Customer cust = customerList.getCustomer(number-1);
            if(cust == null) {
                System.out.println("无法找到指定的客户！");
            }else {
                break;
            }
        }
        //找到指定的客户，删除操作
        System.out.println("是否确认删除（删除11/不删00）：");
        int number1;
        number1 = input.nextInt();
        if(number1 == 00) {
            return;
        }else {
            boolean isDelete = customerList.deleteCustomer(number - 1);
            if(isDelete) {
                System.out.println("-----------------删除成功------------------");
            }else {
                System.out.println("-----------------删除失败------------------");
            }
        }
        
    }

    /**
     * @see 显示客户的列表
     */
    public void listAllCustomers() {
        //System.out.println("显示客户的列表");
        System.out.println("-----------------客户列表------------------");
        
        int total = customerList.getTotal();
        if(total == 0) {
            System.out.println("没有客户记录！！");
        }else {
            System.out.println("编号\t姓名\t性别\t年龄\t电话\t\t邮箱");
            Customer[] custs = customerList.getAllCustomers();
            for(int i = 0;i < total;i++) {
                Customer cust = custs[i];
                System.out.println((i+1) + "\t" + cust.getName() + "\t" + cust.getGender() + "\t"
                + cust.getAge() + "\t" + cust.getPhone() + "\t" + cust.getEmail());
                
            }
        } 
        
        System.out.println("---------------客户列表完成----------------");
    }

    public static void main(String[] args) {

        CustomerView view = new CustomerView();
        view.enterMainView();

    }
}