我需要一个JTextArea在行的末尾它计算在该行中的字符 [英] I need a JTextArea that at the end of a row it counts characters in that row

问题描述

我需要一个 JTextArea ，它接受一个文本文档的票，只是'y'和'n'，使用 BufferedReader 由我的教授给我;它需要计算第一行和后面的每一行的'y'和'n'字符。他给了类提示数组将是有用的，但我不知道如何这样做，任何帮助将非常感谢。谢谢！

I need to make a JTextArea that takes in a text document of votes, which are just 'y' and 'n', using a BufferedReader given to me by my professor; and it needs to count the 'y' and 'n' characters within that first row and for each row after. He gave the class a hint that an array would be useful, but I'm not sure how to do this and any help would be greatly appreciated. Thanks!

编辑：这不是一个家庭作业，但我需要知道如何做这个今晚，所以我可以实际上能够实现它为我的最后

This is not really a homework assignment, but I need to know how to do this by tonight so I can actually be able to implement it for my final, which is tomorrow.

推荐答案

您可以在文章 如何使用文字区域 。

You'll find suitable examples in the article How to Use Text Areas.

附录：一个周到的观察者问，

Addendum: A thoughtful observer asks,

在单行中获取文本的代码是什么？

What would be the code to get the text in a single row?

BufferedReader 可能是不错的选择，如本示例中所建议，复制 stdin 至 stdout ：

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
String s;
while ((s = in.readLine()) != null) {
    // process s
}

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