登陆系统

用户输入数字选择操作

package Test09_Demo.Demo03;/*
    @create 2020--11--25--16:12
*/
public class User {
    private String name;
    private String password;
    private String birthday;
    private String hobby;
    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                ", password='" + password + '\'' +
                ", birthday='" + birthday + '\'' +
                ", hobby='" + hobby + '\'' +
                '}';
    }
    public User() {
    }
    public User(String name, String password, String birthday, String hobby) {
        this.name = name;
        this.password = password;
        this.birthday = birthday;
        this.hobby = hobby;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getBirthday() {
        return birthday;
    }
    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }
    public String getHobby() {
        return hobby;
    }
    public void setHobby(String hobby) {
        this.hobby = hobby;
    }
}

package Test09_Demo.Demo03;/*
    @create 2020--11--25--16:12
*/
import com.sun.xml.internal.ws.api.ha.StickyFeature;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class Test {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        ArrayList<User> array= new ArrayList<>();
        while (true) {
            for (;;) {
                System.out.println("请输入操作   1.注册    2.登陆    3.退出");
                int l = s.nextInt();
            switch (l){
                case 1:
                    registe(array);
                    break;
                case 2:
                    login(array);
                    break;
                case 3:
                    s.close();
                    System.out.println("感谢您的使用！");
                    //结束程序
                    System.exit(0);
                default:
                    System.out.println("输入错误11");
                    break;
            }
        }
        }
    }
    private static void registe(ArrayList<User> array){
        Scanner s = new Scanner(System.in);
        System.out.println("楷书注册");
        System.out.println("请输入用户名：");
        String name = s.next();
        System.out.println("请输入密码：");
        String password = s.next();
        System.out.println("请输入生日：");
        String birthday = s.next();
        System.out.println("请输入爱好：");
        String hobby = s.next();
        User S = new User();
        S.setName(name);
        S.setPassword(password);
        S.setBirthday(birthday);
        S.setHobby(hobby);
        array.add(S);
    }
    private static void login(ArrayList<User> array){
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入用户名");
        String name = sc.next();
        System.out.println("请输入密码");
        String password = sc.next();
        boolean fist = false;
        for (User user : array) {
            if (name.equals(user.getName()) && password.equals(user.getPassword())) {
                System.out.println("登陆成功");
                System.out.println(user);
                fist = true;
                break;
            }
        }
        if (!fist) {
            System.out.println("用户名或密码错误！！！");
        }
    }
}