package top.qaqaq.java.P259.bean;
/**
*
* @Description Customer为实体类,用来封装客户信息
* @author RichieZhang Email:18358892@qq.com
* @version
* @date 2022年10月4日下午5:08:49
*
*/
public class Customer {
private String name; // 客户姓名
private char gender; // 性别
private int age; // 年龄
private String phone; // 电话号码
private String email; // 电子邮件
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 String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public char getGender() {
return gender;
}
public void setGender(char 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 String getDetails() {
return name + "\t" + gender + "\t" + age + "\t" + phone + "\t" + email;
}
// public static void main(String[] args) {
// Customer cust = new Customer("张三", '男', 23, "12323233232", "12323233232@qq.com");
// System.out.println("姓名:" + cust.getName() + ", 性别:" + cust.getGender() + ", 年龄:" + cust.getAge() + ", 电话号码:" + cust.getPhone() + ", 电子邮件:" + cust.getEmail());
// }
}
package top.qaqaq.java.P259.seriver;
import top.qaqaq.java.P259.bean.Customer;
/**
*
* @Description CustomerList为Customer对象的管理模块,
* 内部使用数组管理一组Customer对象,并提供相应的添加、修改、删除和遍历方法, 供CustomerView调用
* @author RichieZhang Email:18358892@qq.com
* @version
* @date 2022年10月4日下午5:09:25
*
*/
public class CustomerList {
private Customer[] customers; // 用来保存客户对象的数组
private int total = 0; // 记录已保存客户对象的数量
/**
* 用来初始化customers数组的构造器
*
* @param totalCustomer 指定数组的长度
*/
public CustomerList(int totalCustomer) {
customers = new Customer[totalCustomer];
}
/**
*
* @Description 将指定的客户添加到数组中
* @author RichieZhang
* @date 2022年10月4日下午5:11:59
* @param customer
* @return true:添加成功 falst:添加失败
*/
public boolean addCustomer(Customer customer) {
if (total >= customers.length) {
return false;
}
customers[total++] = customer;
return true;
}
/**
*
* @Description 修改指定索引位置的客户信息
* @author RichieZhang
* @date 2022年10月4日下午5:12:29
* @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;
}
customers[index] = cust;
return true;
}
/**
*
* @Description 删除指定索引位置上的客户
* @author RichieZhang
* @date 2022年10月4日下午5:12:54
* @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];
}
customers[--total] = null;
return true;
}
/**
*
* @Description 获取所有的客户信息
* @author RichieZhang
* @date 2022年10月4日下午5:13:14
* @return
*/
public Customer[] getAllCustomers() {
Customer custs[] = new Customer[total];
for (int i = 0; i < total; i++) {
custs[i] = customers[i];
}
return custs;
}
/**
*
* @Description 获取指定索引位置上的客户
* @author RichieZhang
* @date 2022年10月4日下午5:13:36
* @param index
* @return 如果找到了元素,则返回;如果没有找到,则返回null
*/
public Customer getCustomer(int index) {
if (index < 0 || index >= total) {
return null;
}
return customers[index];
}
/**
*
* @Description 获取存储的客户的数量
* @author RichieZhang
* @date 2022年10月4日下午5:13:51
* @return
*/
public int getTotal() {
return total;
}
// public static void main(String[] args) {
// CustomerList custs = new CustomerList(5);
//
// Customer customer = new Customer();
// Customer customer1 = new Customer("张三", '男', 23, "12323233232", "12323233232@qq.com");
// Customer customer2 = new Customer("李四", '男', 23, "12323233232", "12323233232@qq.com");
// Customer customer3 = new Customer("王五", '男', 23, "12323233232", "12323233232@qq.com");
// Customer customer4 = new Customer("老六", '男', 23, "12323233232", "12323233232@qq.com");
// Customer customer5 = new Customer("莱七", '男', 23, "12323233232", "12323233232@qq.com");
// custs.addCustomer(customer1);
// custs.addCustomer(customer2);
// custs.addCustomer(customer3);
// custs.addCustomer(customer4);
// custs.addCustomer(customer5);
//
// for (int i = 0; i < custs.total; i++) {
// System.out.println(custs.customers[i].getDetails());
// }
//
// System.out.println("有" + custs.getTotal() + "个客户");
// System.out.println("******************************************");
//
// Customer test = new Customer("你好", '男', 23, "12323233232", "12323233232@qq.com");
//
// custs.replaceCustomer(3, test);
// for (int i = 0; i < custs.total; i++) {
// System.out.println(custs.customers[i].getDetails());
// }
// System.out.println("******************************************");
//
// custs.deleteCustomer(2);
// for (int i = 0; i < custs.total; i++) {
// System.out.println(custs.customers[i].getDetails());
// }
// System.out.println("******************************************");
//
// System.out.println(custs.getCustomer(3).getDetails());
// System.out.println("******************************************");
//
// System.out.println("有" + custs.getTotal() + "个客户");
// System.out.println("******************************************");
//
// System.out.println(custs.getAllCustomers());
//
// }
}
package top.qaqaq.java.P259.ui;
import top.qaqaq.java.P259.bean.Customer;
import top.qaqaq.java.P259.seriver.CustomerList;
import top.qaqaq.java.P259.util.CMUtility;
/**
*
* @Description CustomerView为主模块,负责菜单的显式和处理用户操作
* @author RichieZhang Email:18358892@qq.com
* @version
* @date 2022年10月4日下午8:25:45
*
*/
public class CustomerView {
CustomerList customerList = new CustomerList(10);
public CustomerView() {
Customer customer = new Customer("王涛", '男', 23, "13212341234", "wt@gmail.com");
customerList.addCustomer(customer);
}
/**
*
* @Description 显示《客户信息管理软件》界面的方法
* @author RichieZhang
* @date 2022年10月4日下午8:26:03
*/
public void enterMainMenu() {
boolean isFlag = true;
while (isFlag) {
System.out.println("-----------------客户信息管理软件-----------------\n");
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\n");
System.out.print(" 请选择(1-5):");
char menu = CMUtility.readMenuSelection();
switch (menu) {
case '1':
addNewCustomer();
break;
case '2':
modifyCustomer();
break;
case '3':
deleteCustomer();
break;
case '4':
listAllCustomers();
break;
case '5':
System.out.println("确认是否退出(Y/N):");
char isExit = CMUtility.readConfirmSelection();
if (isExit == 'Y') {
isFlag = false;
}
// break;
}
}
}
/**
*
* @Description 添加客户的操作
* @author RichieZhang
* @date 2022年10月4日下午8:26:27
*/
private void addNewCustomer() {
System.out.println("---------------------添加客户---------------------");
System.out.print("姓名:");
String name = CMUtility.readString(10);
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(13);
System.out.print("邮箱:");
String email = CMUtility.readString(30);
Customer customer = new Customer(name, gender, age, phone, email);
boolean isSussess = customerList.addCustomer(customer);
if (isSussess) {
System.out.println("---------------------添加完成---------------------");
} else {
System.out.println("----------------客户目录已满,添加失败----------------");
}
}
/**
*
* @Description 修改客户的操作
* @author RichieZhang
* @date 2022年10月4日下午8:26:47
*/
private void modifyCustomer() {
System.out.println("---------------------修改客户---------------------");
Customer cust;
int number;
for (;;) {
System.out.print("请选择待修改客户编号(-1退出):");
number = CMUtility.readInt();
if (number == -1) {
return;
}
cust = customerList.getCustomer(number - 1);
if (cust == null) {
System.out.print("无法找到指定客户!");
} else {
break;
}
}
System.out.print("姓名(" + cust.getName() + "):");
String name = CMUtility.readString(10, 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(13, cust.getPhone());
System.out.print("邮箱(" + cust.getEmail() + "):");
String email = CMUtility.readString(30, cust.getEmail());
Customer newCust = new Customer(name, gender, age, phone, email);
boolean isRepalaced = customerList.replaceCustomer(number - 1, newCust);
if (isRepalaced) {
System.out.println("---------------------修改完成---------------------");
} else {
System.out.println("---------------------修改失败---------------------");
}
}
/**
*
* @Description 删除客户的操作
* @author RichieZhang
* @date 2022年10月4日下午8:26:59
*/
private void deleteCustomer() {
System.out.println("---------------------删除客户---------------------");
int number;
for (;;) {
System.out.println("请选择待删除客户编号(-1退出):");
number = CMUtility.readInt();
if (number == -1) {
return;
}
Customer customer = customerList.getCustomer(number - 1);
if (customer == 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 isDelete = CMUtility.readConfirmSelection();
if (isDelete == 'Y') {
boolean deleteSuccess = customerList.deleteCustomer(number - 1);
if (deleteSuccess) {
System.out.println("---------------------删除完成---------------------");
} else {
System.out.println("---------------------删除失败---------------------");
}
} else {
return;
}
}
/**
*
* @Description 显示客户列表的操作
* @author RichieZhang
* @date 2022年10月4日下午8:27:14
*/
private void listAllCustomers() {
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.enterMainMenu();
}
}
package top.qaqaq.java.P259.util;
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;
}
}