找到从特殊字符java开始的单词 [英] Find the words start from a special character java

问题描述

我想在java中的字符串中找到以＃符号开头的单词。标志和单词之间也可以有空格。

I want to find the words that start with a "#" sign in a string in java. There can be spaces between the sign and the word as well.

字符串hi #how are＃you将输出为：

how
you

我用regex尝试了这个，但仍然找不到合适的模式。请帮帮我。

I have tried this with regex, but still could not find a suitable pattern. Please help me on this.

谢谢。

推荐答案

使用＃\ * *（\ w +） as你的正则表达式。

Use #\s*(\w+) as your regex.

String yourString = "hi #how are # you";
Matcher matcher = Pattern.compile("#\\s*(\\w+)").matcher(yourString);
while (matcher.find()) {
  System.out.println(matcher.group(1));
}

这将打印出来：

how
you

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