//实体类
public class Users {
public String username;
public String password;
}
``
public class LoginUser {
public Users[] users = new Users[10];
public boolean loginUser(String name,String pwd) {
boolean flag = false;
for(int i=0;i<users.length;i++) {
//判断数组中有没有空的
if(users[i] == null) {
//这儿要再创建一个用户，不然会显示空指针异常
Users user = new Users();
user.username = name;
user.password = pwd;
flag = true;
break;
}
}
return flag;
}
}
```
import java.util.Scanner;
public class Login {
public static void main(String[] args) {
LoginUser lu = new LoginUser();
Scanner sc = new Scanner(System.in);
System.out.println("请输入用户名");
String username = sc.nextLine();
System.out.println("请输入密码");
String password = sc.nextLine();
boolean flag = lu.loginUser(username, password);
System.out.println(flag);
}
}
```
