Java设计一个用户注册的程序

设计一个用户注册的程序，使用Scanner在控制台输入，字段有 用户名、密码、手机号、邮箱

要求：用户名不超过6位不能以数字开头，密码必须包含大写小写字母和数字6-8位，手机号为11位数字，邮箱必须符合邮箱格式。

使用面向对象的编程思想完成用户注册，可以持续操作，并把注册成功的用户保存。

package lianxi10;

public class User {

private String name;
private String pwd;
private String phone;
private String email;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
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 User(String name, String pwd, String phone, String email) {
super();
this.name = name;
this.pwd = pwd;
this.phone = phone;
this.email = email;
}
public User() {
super();
// TODO Auto-generated constructor stub
}
@Override
public String toString() {
return "姓名：" + name + ", 密码：" + pwd + ", 手机号：" + phone + ", 邮箱：" + email;
}

}

package lianxi10;

import java.util.ArrayList;

import java.util.Scanner;

public class Reg {

static ArrayList<User> list = new ArrayList<User>();

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("=============用户注册界面=============");

a:while (true) {
System.out.println("请选择：1.用户注册；2.查看用户；3.修改用户；4.删除用户；0.退出");
int i = sc.nextInt();
switch (i) {
case 1:
//注册信息
User u = yanzheng(sc);
list.add(u);
break;
case 2:
if(list.size()==0){
System.out.println("当前没有用户，请先注册！");
}else{
for (User user : list) {
System.out.println(user);
}
}
break;
case 3:
setUser(sc);
break;
case 4:
delUser(sc);
break;
case 0:
break a;
default:

}
}

System.out.println("================退出系统，再见！===============");

}

/**
* 删除用户
*/
public static void delUser(Scanner sc){
System.out.println("请输入要删除的用户名：");
String name = sc.next();
//声明要修改的用户对象
User u = null;
//在集合中查询同名的对象
for (User user : list) {
if(user.getName().equals(name)){
u = user;
}
}

if(u==null){
System.out.println("没有查询到该用户！");
return;
}

list.remove(u);
System.out.println("删除成功");
}

/**
* 修改用户
* @param sc
*/
public static void setUser(Scanner sc){
System.out.println("请输入要修改的用户名：");
String name = sc.next();
//声明要修改的用户对象
User u = null;
//在集合中查询同名的对象
for (User user : list) {
if(user.getName().equals(name)){
u = user;
}
}

if(u==null){
System.out.println("没有查询到该用户！");
return;
}

User user = yanzheng(sc);

list.set(list.indexOf(u), user);
System.out.println("修改成功");

}

/**
* 注册
* @param sc
* @return
*/
private static User yanzheng(Scanner sc) {

User u = new User();

//判断姓名
while(true){
System.out.println("请输入用户名：（不能以数字开头，不超过6位）");
String name = sc.next();
if(name.matches("^[^0-9]([0-9a-zA-Z]{0,5})$")){
System.out.println("用户名通过");
u.setName(name);
break;
}else{
System.out.println("用户名不正确");
}
}

//判断密码，必须包含大写、小写、数字
while(true){
System.out.println("请输入密码：，必须包含大写、小写、数字6-8位");
String pwd = sc.next();
if(pwd.matches("^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])([a-zA-Z0-9]{6,8})$")){
System.out.println("密码通过");
u.setPwd(pwd);
break;
}else{
System.out.println("密码不通过");
}
}

//手机号
while(true){
System.out.println("请输入手机号：11位数字");
String phone = sc.next();
if(phone.matches("^([1])([3]|[5]|[7]|[8])([0-9]{9})$")){
System.out.println("手机号通过");
u.setPhone(phone);
break;
}else{
System.out.println("手机号不通过");
}
}

//邮箱
while(true){
System.out.println("请输入邮箱：");
String email = sc.next();
if(email.matches("^[0-9a-zA-Z_]+[@][a-zA-Z0-9]+[.](([c][o][m])|([c]
))$")){
System.out.println("邮箱通过");
u.setEmail(email);
break;
}else{
System.out.println("邮箱不通过");
}
}

return u;

}

}

package lianxi10;

import java.util.ArrayList;

public class Test {

public static void main(String[] args) {

User u = new User("tom","123","1306666","abc@qq.com");
User u2 = new User("jack","123","1306666","abc@qq.com");
Animal a = new Animal("狗");

//使用泛型，是在编译期对代码的限制
ArrayList<User> list = new ArrayList<User>();

//添加
list.add(u);
list.add(u2);

// list.add(a);

//取值，单个查询

// System.out.println(list.size());

// System.out.println(list.get(0));

// System.out.println(list.get(1));

System.out.println("修改前：");

//遍历集合，查询
for (User user : list) {
System.out.println(user);
}

System.out.println("======================");

//修改
list.set(1, new User("Lily","123","1306666","abc@qq.com"));

System.out.println("修改后：");

//遍历集合，查询
for (User user : list) {
System.out.println(user);
}

//删除
list.remove(1);
System.out.println("删除后："+list.size());

}

}