用博客记录我自学的点点滴滴
类图：
Customer类:
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public class Customer { /** * @name 客户姓名 * @sex 性别 * @age 年龄 * @phone 电话号码 * @email 邮箱 */ private String name; private String sex; private int age; private String phone; private String email; public Customer(){}; public Customer(String name,String sex,int age,String phone,String email){ this.name=name; this.sex=sex; this.age=age; this.phone=phone; this.email=email; } public String getName(){ return this.name; } public void setName(String name){ this.name=name; } public String getSex(){ return this.sex; } public void setSex(String sex){ this.sex=sex; } public String getPhone(){ return phone; } public void setPhone(String phone){ this.phone=phone; } public int getAge(){ return this.age; } public void setAge(int age){ this.age=age; } public String getEmail(){ return this.email; } public void setEmail(String email){ this.email=email; }} |
CustomerList 类:
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public class CustomerList { private Customer [] customers; private static int total = 0; /** * 构造器初始化对象数组 * @param totalCustmoers 客户的总数 */ public CustomerList(int totalCustmoers){ customers = new Customer[totalCustmoers]; } /** * 增加客户 * @param customer 客户 * @return 返回是否添加成功 */ public boolean addCustomer(Customer customer){ if(customer!=null&&total<customers.length) {customers[total]=customer; total++; return true;} else { return false;} } /** *替换 * @param index 指定的客户的编号 * @param cust 修改的客户 * @return 返回是否修改成功 */ public boolean replaceCustomer(int index,Customer cust){ if(index>=0 && index <total ) { customers[index]=cust;return true; } else { return false; } } /** *删除客户 * @param index 指定的客户的编号 * @return 返回是否删除成功 */ public boolean deleteCustomer(int index){ if(index<customers.length) { for(int i=index;i<total-1;i++) { customers[i]=customers[i+1];/**把数据往前挪动*/ } customers[total-1]=null; total--;/**存储的数据的总数-1*/ return true; } else { return false; } } /** * 展现客户的信息 * @param index * @return 返回客户 */ public Customer getCustomer(int index){ if(index>=0 && index<total) {return customers[index];} else { return null; } } /** * 获取所有的客户 * @return 客户 */ public Customer[] getAllCustomers(){ Customer [] cust = new Customer[total];/**新建一个数组来接收原数组的数据*/ for(int i=0;i<total;i++){ cust[i]=customers[i]; } return cust; } /** * 得到客户的总数 * @return */ public int getTotal(){ return total; }} |
CustomerVIew类:
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public class CustomerView { private CustomerList customerList = new CustomerList(10); /** * 显示主菜单 */ public void enterMainMenu(){ while(true) {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("-----------------------------------------------------"); Scanner input = new Scanner(System.in); int op = input.nextInt(); switch(op) { case 1 :this.addNewCustomer();break; case 2 :this.modifyCustomer();break; case 3 :this.deleteCustomer();break; case 4 :this.listAllCustomers();break; case 5 :System.exit(0);break; default: System.out.println("重新选择功能");break; } } } /** * 增加客户 */ private void addNewCustomer(){ /** * 从键盘处接收客户数据 */ System.out.println("-------------------添加客户-------------------"); Scanner input = new Scanner(System.in); System.out.println("姓名:"); String name = input.next(); System.out.println("性别:"); String sex=input.next(); System.out.println("年龄:"); int age = input.nextInt(); System.out.println("电话号码:"); String phone = input.next(); System.out.println("电子邮箱:"); String email = input.next(); /** * 对客户数据进行封装 */ Customer person = new Customer(name,sex,age,phone,email); Boolean flag=customerList.addCustomer(person); if(flag) { System.out.println("-------------------添加成功-------------------"); } else { System.out.println("-------------------添加失败-------------------"); } } /** * 修改客户信息 */ private void modifyCustomer(){ System.out.println("-------------------修改客户-------------------"); System.out.println("要修改的客户id:"); Scanner input = new Scanner(System.in); int number = input.nextInt(); Customer customer = customerList.getCustomer(number); System.out.println("姓名:"+customer.getName()); String name = CMUtility.readString(5,customer.getName()); System.out.println("性别:"+customer.getSex()); String sex = CMUtility.readString(5,customer.getSex()); System.out.print("年龄(" + customer.getAge() + "):"); int age = CMUtility.readInt(customer.getAge()); System.out.print("电话(" + customer.getPhone() + "):"); String phone = CMUtility.readString(13, customer.getPhone()); System.out.print("邮箱(" + customer.getEmail() + "):"); String email = CMUtility.readString(15, customer.getEmail()); /**得到新的客户数据*/ customer = new Customer(name,sex,age,phone,email); Boolean flag = customerList.replaceCustomer(number,customer); if(flag) { System.out.println("-------------------修改成功-------------------"); } else { System.out.println("-------------------修改失败-------------------"); } } /** * 删除客户 */ private void deleteCustomer(){ System.out.println("-------------------删除客户-------------------"); System.out.println("要删除的客户id:"); Scanner input = new Scanner(System.in); int number = input.nextInt(); while(true){ System.out.println("退出(-1)"); if(number>=0 && number<customerList.getTotal()) { System.out.println("找到指定客户"); } else if(number==-1) { return; } else { System.out.println("输入错误");break; }} System.out.println("是否确认删除该客户?Y/N"); String ch = input.next(); char o = ch.charAt(0); if(o=='Y') { boolean flag = customerList.deleteCustomer(number); if(flag){ System.out.println("-------------------删除成功-------------------"); } else { System.out.println("-------------------删除失败-------------------"); } } else{ return; }}/** * 获取客户列表 */private void listAllCustomers(){ Customer [] customer=customerList.getAllCustomers(); if(customer.length==0) { System.out.println("没有任何客户数据"); } else{ for(int i=0;i< customer.length;i++) { System.out.println("姓名:"+customer[i].getName()+"\t"+"性别"+customer[i].getSex()+"\t"+"年龄:"+customer[i].getAge()+"\t"+"电话号码:"+customer[i].getPhone()+"\t"+"电子邮箱:"+customer[i].getEmail()+"\t"); }}} public static void main(String[] args) { CustomerView co = new CustomerView(); co.enterMainMenu(); }} |
工具类：
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public class CMUtility { private static Scanner scanner = new Scanner(System.in); public static String readString(int limit) { return readKeyBoard(limit, false); } 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; } |
总结
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原文链接：https://blog.csdn.net/qq_52062446/article/details/115585334
