java project 客户管理信息软件 客户管理信息软件{music id="1886456269" color="#1989fa" autoplay="autoplay"/}参考视频（p248-p259）{bilibili bvid="1Kb411W75N" page="248"/}CustomerView 主模块，菜单显示package com.atguigu.p2.ui; import com.atguigu.p2.bean.Customer; import com.atguigu.p2.service.CustomerList; import com.atguigu.p2.util.CMUtility; /** * @program: project12 * @description: 主模块，菜单显示，处理用户操作 * @author: kkx * @create: 2021-12-28 17:12 **/ public class CustomerView { private CustomerList customerList = new CustomerList(10); public CustomerView(){ //默认有一个 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: kkx * @Date: 2022/1/4 * @Param: [] * @return: void */ public void enterMainMenu(){ boolean isFlag = true; while (isFlag){ System.out.println("\n-----------------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.print ("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: kkx * @Date: 2022/1/4 * @Param: [] * @return: void */ 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); //包装 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("-------------------客户目录已满，添加失败---------------"); } } /** * @Description: 修改客户的操作 * @Author: kkx * @Date: 2022/1/5 * @Param: [] * @return: void */ private void modifyCustomer(){ System.out.println("---------------------修改客户---------------------"); //这两个放外面是因为后面在循环外要调用 int number; Customer cust; 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.println("无法找到指定客户！"); }else { break; } } //修改客户信息 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 isReplaced = customerList.replaceCustomer(number - 1, newCust); if (isReplaced){ System.out.println("---------------------修改完成---------------------"); }else { //没有机会执行 System.out.println("---------------------修改失败---------------------"); } } /** * @Description: 删除客户的操作 * @Author: kkx * @Date: 2022/1/5 * @Param: [] * @return: void */ private void deleteCustomer(){ System.out.println("---------------------删除客户---------------------"); int number; for (;;){ System.out.print("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; } } //找到了指定的客户，开始修改 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 { //没有机会执行 System.out.println("---------------------删除失败---------------------"); } }else { return; } } /** * @Description: 显示客户列表的操作 * @Author: kkx * @Date: 2022/1/4 * @Param: [] * @return: void */ private void listAllCustomers(){ System.out.println("---------------------------客户列表---------------------------\n"); 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 < custs.length; i++) { Customer cust = custs[i]; System.out.println((i + 1) + "\t" + "\t" + cust.getName() + "\t" + cust.getGender() + "\t" + "\t" + cust.getAge() + "\t" + "\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(); } }Customer管理package com.atguigu.p2.service; import com.atguigu.p2.bean.Customer; /** * @program: project12 * @description: Customer管理 * @author: kkx * @create: 2021-12-28 17:11 **/ public class CustomerList { private Customer[] customers; private int total; //记录存储的客户的个数 /** * @Description: 构造器，用来初始化customers数组 * @Author: kkx * @Date: 2021/12/28 * @Param: [totalCustomer] 指定customers数组的最大空间 * @return: */ public CustomerList(int totalCustomer){ customers = new Customer[totalCustomer]; } /** * @Description: 添加指定的客户到数组中 * @Author: kkx * @Date: 2021/12/28 * @Param: [customer] * @return: boolean 是否添加成功 */ public boolean addCustomer(Customer customer){ //小于最大则可以添加 if (total < customers.length){ customers[total] = customer; total++; return true; } return false; } /** * @Description: 修改指定索引位置上的客户信息 * @Author: kkx * @Date: 2021/12/28 * @Param: [index, cust] * @return: boolean 是否修改成功 */ 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信息 * @Author: kkx * @Date: 2022/1/4 * @Param: [index] * @return: boolean 是否删除成功 */ 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]; } //这里先把最后那个指向null，total再-- customers[--total] = null; return true; } /** * @Description: 获取所有客户的客户信息 * @Author: kkx * @Date: 2022/1/4 * @Param: [] * @return: com.atguigu.p2.bean.Customer[] */ public Customer[] getAllCustomers(){ Customer[] custs = new Customer[total]; for (int i = 0; i < total; i++) { custs[i] = customers[i]; } return custs; } /** * @Description: 返回指定索引位置上的Customer * @Author: kkx * @Date: 2022/1/4 * @Param: [index] * @return: 如果找到元素，则返回，如果没有找到，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: kkx * @Date: 2022/1/4 * @Param: [] * @return: int */ public int getTotal(){ return total; } }Customer类package com.atguigu.p2.bean; /** * @program: project12 * @description: Customer类 * @author: kkx * @create: 2021-12-28 17:08 **/ public class Customer { private String name; // 姓名 private char gender; // 性别 private int age; // 年龄 private String phone; // 电话 private String email; // 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 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; } }CMUtility工具类package com.atguigu.p2.util; /** * @program: project12 * @description: CMUtility工具类 * @author: kkx * @create: 2021-12-28 17:14 **/ 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; } }

java project 家庭收支记账软件 {music id="1818128141" color="#1989fa" autoplay="autoplay"/}家庭收支记账软件1. 自己编写的java文件FamilyAccount.java//FamilyAccount.java public class FamilyAccount { public static void main(String[] args) { boolean isFlag = true; String details = "收支\t账户金额\t收支金额\t说 明\n"; int balance = 10000; while (isFlag){ System.out.println("-----------------家庭收支记账软件-----------------\n"); System.out.println(" 1 收支明细"); System.out.println(" 2 登记收入"); System.out.println(" 3 登记支出"); System.out.println(" 4 退 出\n"); System.out.print(" 请选择(1-4)："); //获取输入 char selection = Utility.readMenuSelection(); switch (selection){ case '1': //1.收支明细 System.out.println("-----------------当前收支明细记录-----------------"); System.out.println(details); System.out.println("--------------------------------------------------"); break; case '2': //2.登记收入 System.out.print("本次收入金额："); int addMoney = Utility.readNumber(); System.out.print("本次收入说明："); String addInfo = Utility.readString(); balance += addMoney; details += ("收入\t" + balance + "\t\t" + addMoney + "\t\t" + addInfo + "\n"); System.out.println("---------------------登记完成---------------------\n"); break; case '3': //3.登记支出 System.out.print("本次支出金额："); int minusMoney = Utility.readNumber(); System.out.print("本次支出说明："); String minusInfo = Utility.readString(); if (balance >= minusMoney){ balance -= minusMoney; details += ("支出\t" + balance + "\t\t" + minusMoney + "\t\t" + minusInfo + "\n"); }else { System.out.println("钱不够，付不了~~~"); } System.out.println("---------------------登记完成---------------------\n"); break; case '4': //4.退 出 System.out.print("确认是否退出(Y/N)："); char isExit = Utility.readConfirmSelection(); if (isExit == 'Y'){ isFlag = false; } break; } } } }2. 别人写好的工具类Utility.java//Utility.java import java.util.Scanner; /** Utility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 Utility { 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’-’4’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); c = str.charAt(0); if (c != '1' && c != '2' && c != '3' && c != '4') { System.out.print("选择错误，请重新输入："); } else break; } return c; } /** 用于收入和支出金额的输入。该方法从键盘读取一个不超过4位长度的整数，并将其作为方法的返回值。 */ public static int readNumber() { int n; for (; ; ) { String str = readKeyBoard(4); 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; } /** 用于收入和支出说明的输入。该方法从键盘读取一个不超过8位长度的字符串，并将其作为方法的返回值。 */ public static String readString() { String str = readKeyBoard(8); return 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).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) { String line = ""; while (scanner.hasNext()) { line = scanner.nextLine(); 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; } }