if Scanner Boolean statement with 2 nextInt()

Question

我写了这段代码，但是当我的密码正确时我有问题。请指导我。我是 Java 编码的新手

import java.util.Scanner;

public class PasswordProjectQ {

    private static Scanner passwordInput;

    public static void main(String[] args) {

        passwordInput = new Scanner(System.in);

        int builtInPassword = 3720118;

        System.out.println("Please enter your password:(just integer)");

        if(passwordInput.hasNextInt() && passwordInput.nextInt() != builtInPassword) {

            System.out.println("You entered the right format \nbut the password is WRONG!");

        }else if(passwordInput.hasNextInt() && passwordInput.nextInt() == builtInPassword) {

            System.out.println("Thanks,your password is correct");

        }else {

            System.out.println("WRONG format!");

        }

    }

}

Answer 1

您必须调用一次才能获取密码，如下所示hasNextInt()：passwordInput.nextInt()if (passwordInput.hasNextInt()) {    if (passwordInput.nextInt() != builtInPassword) {        System.out.println("You entered the right format \nbut the password is WRONG!");    } else {        System.out.println("Thanks,your password is correct");    }} else {    System.out.println("WRONG format!");}