java - 如何在Java中创建一个循环数组，只打印数组的次数？

Question

这个问题已经有答案了:

Scanner is skipping nextLine() after using next() or nextFoo()? (25 个回答)

已关闭 6 年前。

当尝试制作测验制作代码时:我想询问问题的数量，然后创建那么多的问题，并能够返回每个问题。我很困惑为什么输出不是逐行输出和输入。我已经导入了 java.io.* 和 java.util.*

public class quiz {
    public static void main(String []args){

        Scanner kbReader = new Scanner(System.in);
        System.out.println("~@{@{@{{{{{{{{{{{{{{{{{{  Quizmaker   }}}}}}}}}}}}}}}}}}@}@}@~");
        System.out.println("How many questions are in this quiz?");
        int numberoQuestions = kbReader.nextInt();
        //lets make this input 4
        String question [] = new String [numberoQuestions]; //the questions the user has made
        int createdQs = 0; //how many questions the user has made

        do {
        createdQs ++;
        System.out.println("What is question " + createdQs);
        question [createdQs]= kbReader.nextLine();
        }
        while(createdQs <= numberoQuestions);
/*
 supposed to print
 How many questions are in this quiz?
(4)
 What is question 1?
(input)
 What is question 2?
(input)
 What is question 3?
(input)
 What is question 4?
(input)

it instead prints
How many questions are in this quiz?
4
What is question 1
What is question 2
age?
What is question 3
height?
What is question 4
school?
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
    at finalProject.quiz.main(quiz.java:18)

 */
        System.out.println(question[3] );//prints question 4 but I want it to print question 3
    }
}

Answer 1

使用scanner.readLine()调用 nextInt() 后消耗缓冲区中剩余的换行符，移动createdQs++;到do-while结束循环，并将循环条件更改为createdQs < numberoQuestions (因为数组从 0 开始并转到 length-1 )。