如何在Java中获取'char'数组的输入？ [英] How to take input for 'char' array in Java?

问题描述

我正在开发一个小型应用程序来评估用户提交的多项选择题。每个问题显然有4种选择。 A B C D。由于这些答案将存储在二维数组中，我想问一下如何从用户获取char变量的输入。我还没有学习任何方法来在控制台上获取char数组的输入。即我刚刚使用了nextInt（），nextDouble（），nextLine（）等。这些方法适用于字符串和整数，不适用于char。如何获取char数组的输入？我将发布输入的代码片段，以便人们可以更好地理解。

I am developing a small application to grade Multiple Choice Questions submitted by the user. Each question has obviously 4 choices. A,B,C,D. Since these answers will be stored in a two dimensional array, I want to ask how can I take input from user for char variable. I have not learnt any method to take input for char arrays on console. i.e I have just worked with nextInt(), nextDouble(), nextLine() etc. These methods are for Strings and Integers not for char. How to take input for char arrays? I am going to post code snippet of taking input so that you people can better understand.

public class MCQChecker{

    public static void main(String []args)
    {
        Scanner input=new Scanner(System.in);
        char[][] students=new char[8][10];

        for (int i=0;i<8;i++)
        {
            System.out.println("Please enter the answer of "+students[i+1]);
            for(int j=0;j<10;j++)
            {
                students[i][j]=?;//Im stuck here
            }
        }
    }
}

推荐答案

将 .next（）值作为 String 获取后，检查其 .length是否为（）== 1 ，然后使用 yourString.charAt（0） 。

Once you get the .next() value as a String, check if its .length() == 1, then use yourString.charAt(0).

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