java——模拟新浪微博用户注册

1.创建用户类，重写HashCode（）和equals（）方法：

import java.util.*;

public class User{

    private String name;

    private String pwd;

    private Date bd;

    private String telNum;

    private String email;

    public User(){

    }

    public User(String name, String pwd, Date bd,

                    String telNum, String email){

        this.name = name;

        this.pwd = pwd;

        this.bd = bd;

        this.telNum = telNum;

        this.email = email;

    }

    @Override

    public int hashCode(){

        return name.hashCode();

    }

    @Override

    public boolean equals(Object obj){

        if(this == obj){

            return true;

        }

        if(obj == null){

            return false;

        }

        // getClass() 返回此 Object 的运行时的类。

        if(getClass() != obj.getClass()){

            return false;

        }

            //不这样会报错，obj是Object类，而Object类是所有类的父类，包括了User类，所以上一步即使相等，还是得强制转换成Object的子类User才行。

        User other = (User) obj;

        if(name == null){

            if(other.name != null){

                return false;

            }

        }else if(!name.equals(other.name)){

            return false;

        }

        return true;

    }

}

2.创建用户注册类：

import java.util.*;

public class UserRegister{

    public static HashSet<User> USER_DATA = new HashSet<User>();

    public static void main(String[] args){

        //initData();

        Scanner scan = new Scanner(System.in);

        System.out.println("请输入用户名：");

        String name = scan.nextLine();

        System.out.println("请输入密码：");

        String pwd = scan.nextLine();

        System.out.println("请再次输入密码：");

        String repwd = scan.nextLine();

        System.out.println("请输入出生日期：");

        String bd = scan.nextLine();

        System.out.println("请输入手机号：");

        String telNum = scan.nextLine();

        System.out.println("请输入电子邮箱：");

        String email = scan.nextLine();

        CheckInfo checkInfo = new CheckInfo(USER_DATA);

        String result = checkInfo.checkAction(name, pwd, repwd, bd, telNum, email);

        System.out.println("注册结果：" + result);

     }

 //    private static void initData(){

 //        User user1 = new User("张三", "123", "123", new Date(),

 //        "18812341234", "1123456@163.com");

 //        User user2 = new User("张六", "126", "126", new Date(),

 //        "18812341236", "66666666@163.com");

 //        USER_DATA.add(user1);

 //      USER_DATA.add(user2);

 //    }

}

3.创建校验信息类：

import java.util.*;

import java.util.*;

import java.text.*;

public class CheckInfo{

    public static HashSet<User> USER_DATA = new HashSet<User>();

    public CheckInfo(HashSet<User> USER_DATA){

        this.USER_DATA = USER_DATA;

    }

    public String checkAction(String name, String pwd,

     String repwd, String bd, String telNum, String email){

        StringBuilder result = new StringBuilder();

        int state = 1;

        //密码判断

        if(!pwd.equals(repwd)){

            result.append("两次输入的密码不一样~\r\n");

            state = 2;

        }

        //生日判断

        if(bd.length() != 10){

            result.append("生日格式不正确~\r\n");

            state = 2;

        }else{

            for(int i=0; i<bd.length(); i++){

                Character thisChar = bd.charAt(i);

                if(i == 4 || i == 7){

                    if(thisChar != '-'){

                        result.append("生日格式不正确~\r\n");

                        state = 2;

                    }

                }else{

                    if(!Character.isDigit(thisChar)){

                        result.append("生日格式不正确~\r\n");

                        state = 2;

                    }

                }

            }

        }

        //电话号码判断

        if(telNum.length() != 11){

            result.append("输入手机号不正确~\r\n");

            state = 2;

        }else{

            for(int i=0; i<telNum.length(); i++){

                Character thisChar = telNum.charAt(i);

                if(!Character.isDigit(thisChar)){

                result.append("输入手机号不正确~\r\n");

                state = 2;

            }else if(!(telNum.startsWith("13") ||

                             telNum.startsWith("15") ||

                             telNum.startsWith("18") ||

                             telNum.startsWith("17"))){

                            result.append("输入手机号不正确~\r\n");

                            state = 2;

                }

            }

        }

        //邮箱判断

        if(!email.contains("@")){

            result.append("邮箱不正确~\r\n");

            state = 2;

        }

        if(state == 1){

            //格式化日期返回对象

            DateFormat format = new SimpleDateFormat ("yyyy-mm-dd");

            Date datebd = null;

            try {

                datebd = format.parse(bd);

            } catch (ParseException e){

                    e.printStackTrace();

            }

            User newUser = new User(name, repwd, datebd, telNum, email);

            if(!USER_DATA.add(newUser)){

                result.append("用户重复！");

                state = 2;

            }

            if(state == 1){

                result.append("注册成功！");

            }

        }

        return result.toString();

    }

}

巴特西

java——模拟新浪微博用户注册

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