java - 在帐户和密码java中仅显示5位数字

Question

我需要用户只输入 5 位数字和密码我试试这个但我仍然可以运行超过 5 位数字..

public static void login() throws IllegalLoginException {

    int acc, password;
    System.out.println("Welcome!");
    System.out.print("Enter your account number: ");
    acc = in.nextInt();

   if (acc > 010000 && acc < 9999){

          throw new IllegalLoginException("from Exception: Account number not enough 5 digits");

    }
    System.out.print("Enter your password number: ");
    password = in.nextInt();

    if (password >= 12345 && password <= 9999) {

          throw new IllegalLoginException("from Exception: 5 Digits password required!");
    }
    System.out.println("\nHello there, " + acc);
}

标签： java

Answer 1

public static void login() throws IllegalLoginException {

    int acc, password;
    System.out.println("Welcome!");
    System.out.print("Enter your account number: ");
    acc = in.nextInt();

   if (acc == null || acc.trim.length()!=5){

          throw new IllegalLoginException("from Exception: Account number must be 5 digits long");

    }
    System.out.print("Enter your password number: ");
    password = in.nextInt();

    if (password == null || password.trim.length()!=5) {

          throw new IllegalLoginException("from Exception: 5 Digits password required!");
    }
    System.out.println("\nHello there, " + acc);
}