项目测试

CMUtility 工具类的实现

package com.chenxi.p2.util;

//package com.atguigu.p2;


import java.util.*;
/**
 CMUtility工具类：
 将不同的功能封装为方法，就是可以直接通过调用方法使用它的功能，而无需考虑具体的功能实现细节。
 */
public class CMUtility {
    private static Scanner scanner = new Scanner(System.in);
    /**
     用于界面菜单的选择。该方法读取键盘，如果用户键入’1’-’5’中的任意字符，则方法返回。返回值为用户键入字符。
     */
    public static char readMenuSelection() {
        char c;
        for (; ; ) {
            String str = readKeyBoard(1, false);
            c = str.charAt(0);
            if (c != '1' && c != '2' &&
                    c != '3' && c != '4' && c != '5') {
                System.out.print("选择错误，请重新输入：");
            } else break;
        }
        return c;
    }
    /**
     从键盘读取一个字符，并将其作为方法的返回值。
     */
    public static char readChar() {
        String str = readKeyBoard(1, false);
        return str.charAt(0);
    }
    /**
     从键盘读取一个字符，并将其作为方法的返回值。
     如果用户不输入字符而直接回车，方法将以defaultValue 作为返回值。
     */
    public static char readChar(char defaultValue) {
        String str = readKeyBoard(1, true);
        return (str.length() == 0) ? defaultValue : str.charAt(0);
    }
    /**
     从键盘读取一个长度不超过2位的整数，并将其作为方法的返回值。
     */
    public static int readInt() {
        int n;
        for (; ; ) {
            String str = readKeyBoard(2, false);
            try {
                n = Integer.parseInt(str);
                break;
            } catch (NumberFormatException e) {
                System.out.print("数字输入错误，请重新输入：");
            }
        }
        return n;
    }
    /**
     从键盘读取一个长度不超过2位的整数，并将其作为方法的返回值。
     如果用户不输入字符而直接回车，方法将以defaultValue 作为返回值。
     */
    public static int readInt(int defaultValue) {
        int n;
        for (; ; ) {
            String str = readKeyBoard(2, true);
            if (str.equals("")) {
                return defaultValue;
            }

            try {
                n = Integer.parseInt(str);
                break;
            } catch (NumberFormatException e) {
                System.out.print("数字输入错误，请重新输入：");
            }
        }
        return n;
    }
    /**
     从键盘读取一个长度不超过limit的字符串，并将其作为方法的返回值。
     */
    public static String readString(int limit) {
        return readKeyBoard(limit, false);
    }
    /**
     从键盘读取一个长度不超过limit的字符串，并将其作为方法的返回值。
     如果用户不输入字符而直接回车，方法将以defaultValue 作为返回值。
     */
    public static String readString(int limit, String defaultValue) {
        String str = readKeyBoard(limit, true);
        return str.equals("")? defaultValue : str;
    }
    /**
     用于确认选择的输入。该方法从键盘读取‘Y’或’N’，并将其作为方法的返回值。
     */
    public static char readConfirmSelection() {
        char c;
        for (; ; ) {
            String str = readKeyBoard(1, false).toUpperCase();
            c = str.charAt(0);
            if (c == 'Y' || c == 'N') {
                break;
            } else {
                System.out.print("选择错误，请重新输入：");
            }
        }
        return c;
    }

    private static String readKeyBoard(int limit, boolean blankReturn) {
        String line = "";

        while (scanner.hasNextLine()) {
            line = scanner.nextLine();
            if (line.length() == 0) {
                if (blankReturn) return line;
                else continue;
            }

            if (line.length() < 1 || line.length() > limit) {
                System.out.print("输入长度（不大于" + limit + "）错误，请重新输入：");
                continue;
            }
            break;
        }

        return line;
    }
}

　　

Customer 类的实现

package com.chenxi.p2.bean;
/*

 */
public class Customer {
    private String name;//客户姓名
    private char gender;//性别
    private int age;//年龄
    private String phone;// 电话
    private String email;//电子邮箱
    public Customer(){

    }
    public Customer(String name,char gender,int age,String phone,String email){
        this.name=name;
        this.gender=gender;
        this.age=age;
        this.phone=phone;
        this.email=email;

    }

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

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

    public void setGender(char gender) {
        this.gender = gender;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }
    public String getName(){
        return  this.name;
    }
    public String getPhone(){
        return this.phone;
    }

    public char getGender() {
        return gender;
    }

    public int getAge() {
        return age;
    }

    public String getEmail() {
        return email;
    }

}

　　

CustomerList 类的实现

package com.chenxi.p2.service;

import com.chenxi.p2.bean.Customer;

/*

 */
public class CustomerList {
    private Customer[] customers;//
    private  int total = 0;
    /*
    初始化customers数组的构造器
    @param totalCustomer:指定数组的长度
     */
    public CustomerList(int totalCustomer){
        //this.total=totalCustomer;

        customers= new Customer[totalCustomer];
    }
    /*
    将指定的客户添加到数组中
    return返回true表示添加成功false添加失败
     */
    public boolean addCustomer(Customer customer){
        if (total>=customers.length){
            return  false;
        }else {
            customers[total]=customer;
            total++;
            return true;
        }

    }
    /*
    修改指定位置的信息
    return true表示成功 false表示失败
     */
    public boolean replaceCustomer(int index,Customer cust){
        if (index<0||index>=total){
            return false;
        }else {
            customers[index]=cust;
            return true;
        }
    }
    /*
    删除指定位置上的元素
    return teue 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];
//            i++;
        }
        customers[total-1]=null;
        total--;
        return true;
    }

    public  Customer[] getAllCustomers(){
        Customer[] cus=new Customer[total];
        for (int i=0;i<total;i++){
            cus[i]=customers[i];
        }
        return cus;
    }
    public Customer getCustomer(int index){
        if (index<0||index>=total){
            return null;
        }
        return customers[index];
    }
    public int getTotal(){
        return total;
    }

}

　　

CustomerView 类的实现

package com.chenxi.p2.ui;


import com.chenxi.p2.bean.Customer;
import com.chenxi.p2.service.CustomerList;
import com.chenxi.p2.util.CMUtility;

public class CustomerView {
    private CustomerList customersList =new CustomerList(10);
    int total;
    public CustomerView(){
        Customer customer = new Customer("张三", '男', 30, "010-56253825",
                "abc@email.com");
        customersList.addCustomer(customer);

    }

    /*
显示客户信息管理软件的方法
 */
     public void enterMainMenu(){
        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
");
            System.out.print("                   请选择(1-5)：");
            char menu=CMUtility.readMenuSelection();
            switch (menu){
                case '1':
                    this.addNewCustomer();
                    break;
                case '2':
                    this.modifyCustomer();
                    break;
                case '3':
                    this.deleteCustomer();
                    break;
                case '4':
                    this.listAllCustomers();
                    break;
                case '5':
//                    System.out.println("退出！");
                    System.out.println("确认是否退出（Y/N）:");
                    char isExit=CMUtility.readConfirmSelection();
                    if (isExit == 'Y'){
                                  isFlag = false;
                    }


            }

        }

    }
    /*
    添加客户操作
     */
    public void addNewCustomer(){
      System.out.println("");
        System.out.println("---------------------添加客户---------------------");
        System.out.print("姓名：");
        String name = CMUtility.readString(4);
        System.out.print("性别：");
        char gender = CMUtility.readChar();
        System.out.print("年龄：");
        int age = CMUtility.readInt();
        System.out.print("电话：");
        String phone = CMUtility.readString(15);
        System.out.print("邮箱：");
        String email = CMUtility.readString(15);
//将上述数据记录对象中
        Customer cust = new Customer(name, gender, age, phone, email);
        boolean flag = customersList.addCustomer(cust);
        if (flag) {
            System.out
                    .println("---------------------添加完成---------------------");
        } else {
            System.out.println("----------------记录已满,无法添加-----------------");
        }

    }
    /*
    修改客户操作
     */
    public void modifyCustomer(){
        //System.out.println("修改");
        System.out.println("---------------------修改客户---------------------");

        int index = 0;
        Customer cust ;//声明在外面
        for (;;) {
            System.out.print("请选择待修改客户编号(-1退出)：");
            index = CMUtility.readInt();
            if (index == -1) {
                return;
            }
//赋值在里面
            cust = customersList.getCustomer(index - 1);
            if (cust == null) {
                System.out.println("无法找到指定客户！");
            } else {
                break;//结束循环
            }

        }
        //修改操作

        System.out.print("姓名(" + cust.getName() + ")：");
        //表示如果不修改就用默认值（原来的name的值）
        String name = CMUtility.readString(4, cust.getName());

        System.out.print("性别(" + cust.getGender() + ")：");
        char gender = CMUtility.readChar(cust.getGender());

        System.out.print("年龄(" + cust.getAge() + ")：");
        int age = CMUtility.readInt(cust.getAge());

        System.out.print("电话(" + cust.getPhone() + ")：");
        String phone = CMUtility.readString(15, cust.getPhone());

        System.out.print("邮箱(" + cust.getEmail() + ")：");
        String email = CMUtility.readString(15, cust.getEmail());

        cust = new Customer(name, gender, age, phone, email);

        boolean flag = customersList.replaceCustomer(index - 1, cust);
        if (flag) {
            System.out
                    .println("---------------------修改完成---------------------");
        } else {
            System.out.println("----------无法找到指定客户,修改失败--------------");
        }

    }
    /*
    删除客户操作 b
     */
    public void deleteCustomer(){
        System.out.println("---------------------删除客户---------------------");

        int index ;
        Customer cust ;
        for (;;) {
            System.out.print("请选择待删除客户编号(-1退出)：");
            index = CMUtility.readInt();
            if (index == -1) {
                return;
            }

            cust = customersList.getCustomer(index - 1);
            if (cust == null) {
                System.out.println("无法找到指定客户！");
            } else
                break;
        }

        System.out.print("确认是否删除(Y/N)：");
        char yn = CMUtility.readConfirmSelection();
        if (yn == 'N')
            return;

        boolean flag = customersList.deleteCustomer(index - 1);
        if (flag) {
            System.out.println("---------------------删除完成---------------------");
        } else {
            System.out.println("----------无法找到指定客户,删除失败--------------");
        }
    }
    /*
    显示客户列表
     */
    public void listAllCustomers(){
    System.out.println("客户");
        System.out.println("---------------------------客户列表---------------------------");
        int total= customersList.getTotal();
        if (total==0){
            System.out.println("没有客户记录！");
        }else {
            System.out.println("编号		姓名		性别		年龄		电话				邮箱");
            Customer[] custs=customersList.getAllCustomers();
            for (int i =0 ;i<custs.length;i++) {
                Customer cust=custs[i];
                System.out.println((i + 1) + "		" + cust.getName()+"		"+cust.getGender()+"		"+cust.getAge()+ "		" + custs[i].getPhone() + "		" + custs[i].getEmail());
            }
        }

        System.out.println("-------------------------客户列表完成-------------------------");
    }
    public static void main(String[] args){
        CustomerView View=new CustomerView();
        View.enterMainMenu();
    }

}