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!");

}