Java:如何将字符串拆分为多个字符?

问题描述

我试图在线搜索以解决这个问题，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在问什么:

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?"

splitByNumber 方法将字符串text"每 4 个字符拆分一次.我怎样才能创建这个方法??

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

非常感谢

推荐答案

我认为他想要的是将一个字符串拆分为大小为 4 的子字符串.然后我会在循环中这样做:

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;
}

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