java - 使用 Java 创建注册和登录页面

Question

我是 Java 初学者，我正在尝试使用 Java 创建两个页面，即注册页面和登录页面。我试图创建的只是一个控制台，因此不需要 GUI。现在，我正在创建一个注册页面，您可以是学生也可以是导师，使用数组来存储用户输入，当用户登录时，它将检查注册页面中的用户输入。

注册所需信息(获取用户输入):电子邮件、密码、用户名、联系人、凭据

目前，我陷入了 switch 语句内的数组部分，我不太确定如何在 switch 内实现数组/数组列表。这是我得到的:

import java.util.ArrayList;
 import java.util.Scanner;


 public class assgn {

        public static void  main(String[] args) {
            ArrayList<userType> users = new ArrayList<userType>(); // store and hold user input temporary
            Scanner input = new Scanner(System.in); // to obtain input from user

            String email, password, username, subject, credentials;
            int contact;

            System.out.println("========== SIGN UP PAGE ==========");
            System.out.println("Pick your choice:  ");
            System.out.println("1) Student" + "\n" + "2) Tutor");
            int choice = input.nextInt();

            switch(choice) {
                case 1:
                    System.out.println("========== Student Account ==========");
                    //arrays goes here
                    break;

                case 2:
                    System.out.println("========== Tutor Account ==========");
                    //arrays goes here
                    break;

                default:
                    System.out.println("Please pick your account type");
            }
        }

    }

下面是类文件:

public class userType {
    private String email, password, username, subject, credentials;
    private int contact;

    public String getEmail() {
        return email;
    }

    public void newEmail (String email) {
        this.email = email;
    }

    public String getPassword() {
        return password;
    }

    public void newPassword(String password) {
        this.password = password;
    }

    public String getUsername() {
        return username;
    }

    public void newUsername (String username) {
        this.username = username;
    }

    public String getSubject (){
        return subject;
    }

    public void newSubject (String subject){
        this.subject = subject;
    }

    public String getCredentials() {
        return credentials;
    }

    public void newCredentials(){
        this.credentials = credentials;
    }

    public int getContact() {
        return contact;
    }

    public void newContact (int contact){
        this.contact = contact;
    }

    public userType(String email, String password, String username, String subject, String credentials){
        this.email = email;
        this.password = password;
        this.username = username;
        this.subject = subject;
        this.credentials = credentials;
    }

    public userType(int contact){
        this.contact = contact;
    }
}

任何帮助将不胜感激，提前致谢

Answer 1

您可以使用已经创建的内容将它们添加到 users ArrayList 中。

switch (choice) {
case 1:
    System.out.println("========== Student Account ==========");
    users.add(new userType(email, password, username, subject, credentials));
    break;

case 2:
    System.out.println("========== Tutor Account ==========");
    users.add(new userType(email, password, username, subject, credentials));
    break;

default:
    System.out.println("Please pick your account type");
}

您仍然需要让用户填写他们的电子邮件、密码、用户名、主题 当然还有凭证。除此之外，我会在 userType 的构造函数中添加一些内容，以便您可以识别用户是导师还是学生。

我会将类名 userType 更改为 UserType，这是 Java 命名约定。