发布时间:2024-03-08 14:01
本文实例为大家分享了java实现客户管理系统的具体代码,供大家参考,具体内容如下
代码:
先写个客户类
package jjave_16; /** * 客户类 * */ public class Customer { private String name; private char gender; private int age; private String phone; private String email; 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 toString() { return \"Customer [name=\" + name + \", gender=\" + gender + \", age=\" + age + \", phone=\" + phone + \", email=\" + email + \"]\"; } }
之后就写两个工具类和运行类
package jjave_16; /** * 工具类:操作字符长度输入是否正确 * */ import java.util.Scanner; public class CMUtility { /** * 用于界面菜单的选择,该方法读取键盘,如果用户输入1-5中的任意字符,则方法返回,返回值为用户键入字符 */ private static Scanner scan=new Scanner(System.in);//少了static,下面的方面无法使用 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.println(\"选择错误,请重新输入:\"); }else break; } return c; } /** * * @param * @param blankReturn * @return */ public static String readKeyBoard(int limit, boolean blankReturn) { String line=\" \"; for(;;) { line=scan.nextLine(); if(line.length()==0) { if(blankReturn) return line; } if(line.length()<1||line.length()>limit) { System.out.println(\"输入长度(在大于)\" + limit + \")错误,请重新输入:\"); //continue; }else break; } return line; } /** * 功能5: 退出判断 */ public static char readConfirmSelection() { char c; for(;;) { String str=readKeyBoard(1,false).toUpperCase(); c=str.charAt(0); if(c!=\'Y\'&&c!=\'N\') { System.out.println(\"选择错误,请重新输入:\"); }else break; } return c; } /** * 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 i) { return readKeyBoard(i,false); } /** * 从键盘读取一个字符,并将其作为方法的返回值 */ public static char readChar() { char c; for (;;) { String str = readKeyBoard(1, false); c = str.charAt(0); if (c == \'男\' || c == \'女\') { break; } else { System.out.println(\"输入错误(只能选择男或女),请重新输入:\"); } } return c; } /** * 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 (Exception e) { System.out.println(\"数字输入错误,请重新输入:\"); } } return n; } }
package jjave_16; /** * 工具类:操作存储客户的数组增删改查 * */ public class CustomerList { private Customer[] customers; private int total=0; public CustomerList(int index){ customers=new Customer[index]; } /** * 查询所有客户 * 因为需要借助total的值,来确定是数组中的第几个!! */ public Customer[] getAllCustomers() { Customer[] custs = new Customer[total]; for(int i=0;i0||limit customers.length)return false; customers[total++]=cust; return true; } /** * 根据编号删除客户 */ public boolean deleteCustomer(int index) { if(index<0 || index>=total) return false; /** * for里面的条件值得一想。 */ for(int i=index;i =total) return false; customers[index]=cust; return true; } }
package com.up; /** * 业务类 * */ public class CustomerView { public static void main(String[] args) { CustomerView cView = new CustomerView(); cView.enterMainMenu(); } private CustomerList customers = new CustomerList(10); public CustomerView() { Customer cust = new Customer(\"张三\", \'男\', 28, \"010-56253825\", \"abc@email.com\"); customers.addCustomer(cust); } public void enterMainMenu() { boolean loopFlag = true; do { 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.println(\" 请选择(1-5):\"); char key = CMUtility.readMenuSelection(); switch (key) { case \'1\': addNewCustomer(); break; case \'2\': modifyCustomer(); break; case \'3\': deleteCustomer(); break; case \'4\': listAllCustomer(); break; case \'5\': System.out.println(\"确认是否退出(Y/N):\"); char yn = CMUtility.readConfirmSelection(); if (yn == \'Y\') { loopFlag = false; } break; } } while (loopFlag); } private void addNewCustomer() { System.out.println(\"------------------------添加客户----------------------\"); System.out.println(\"姓名:\"); String name = CMUtility.readString(4); System.out.println(\"性别:\"); char gender = CMUtility.readChar(); System.out.println(\"年龄\"); int age = CMUtility.readInt(); System.out.println(\"电话:\"); String phone = CMUtility.readString(15); System.out.println(\"邮箱:\"); String email = CMUtility.readString(15); Customer cust = new Customer(name, gender, age, phone, email); boolean flag = customers.addCustomer(cust); if (flag) { System.out.println(\"------------------------添加完成----------------------\"); } else { System.out.println(\"---------------------记录已满,无法添加----------------------\"); } } private void modifyCustomer() { System.out.println(\"------------------------修改客户----------------------\"); int index = 0; Customer cust = null; for (;;) { System.out.println(\"请选择待修改客户编号(-1退出):\"); index = CMUtility.readInt(); if (index == -1) { return; } cust = customers.getCustomer(index - 1); if(cust == null){ System.out.println(\"无法找到指定客户!\"); }else break; } System.out.println(\"姓名(\"+cust.getName()+\"):\"); String name = CMUtility.readString(4,cust.getName()); System.out.println(\"性别(\"+cust.getGender()+\"):\"); char gender = CMUtility.readChar(); System.out.println(\"年龄(\"+cust.getAge()+\"):\"); int age = CMUtility.readInt(); System.out.println(\"电话(\"+cust.getPhone()+\"):\"); String phone = CMUtility.readString(15,cust.getPhone()); System.out.println(\"邮箱(\"+cust.getEmail()+\"):\"); String email = CMUtility.readString(15,cust.getEmail()); cust = new Customer(name,gender,age,phone,email); boolean flag = customers.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------------------\"); } } private void deleteCustomer() { System.out.println(\"------------------------删除客户----------------------\"); int index = 0; Customer cust = null; for (;;) { System.out.println(\"请选择待删除客户编号(-1退出):\"); index = CMUtility.readInt(); if (index == -1) { return; } cust = customers.getCustomer(index - 1); if (cust == null) { System.out.println(\"无法找到指定客户!\"); } else break; } System.out.println(\"确认是否删除(Y/N):\"); char yn = CMUtility.readConfirmSelection(); if (yn == \'N\') return; boolean flag = customers.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------------------\"); } } private void listAllCustomer() { System.out.println(\"------------------------客户列表----------------------\"); Customer[] custs = customers.getAllCustomers(); if (custs.length == 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\"); for (int i = 0; i < custs.length; i++) { System.out.println(i + 1 + \"\\t\" + custs[i].getName() + \"\\t\" + custs[i].getGender() + \"\\t\" + custs[i].getAge() + \"\\t\" + custs[i].getPhone() + \"\\t\" + custs[i].getEmail()); } } } }
暂时先用数组实现客户的保存,当然里面使用到了高内聚低耦合的设计概念。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。