Java：如何用一些字符拆分字符串？

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我试图在线搜索来解决这个问题，但我没有找到任何东西。

I tried to search online to solve this question but I didn't found anything.

我写了以下抽象代码来解释我问： / p>

I wrote the following abstract code to explain what I'm asking:

String text = "how are you?"; String[] textArray= text.splitByNumber(4); //this method is what I'm asking textArray[0]; //it contains "how " textArray[1]; //it contains "are " textArray[2]; //it contains "you?"

方法splitByNumber每4个字符分割一个字符串text。如何创建此方法

The method splitByNumber splits the string "text" every 4 characters. How I can create this method??

很感谢

推荐答案

我想他想要的是一个字符串拆分为大小为4的子字符串。然后我将这样做一个循环：

I think that what he wants is to have a string split into substrings of size 4. Then I would do this in a loop:

List<String> strings = new ArrayList<String>(); int index = 0; while (index < text.length()) { strings.add(text.substring(index, Math.min(index + 4,text.length()))); index += 4; }