计算正则表达式匹配

Question

I need to count the matches that regex found to declare an array. I tried it with .groupCount() but that doesn't seem to be the right thing^^ My code:

Pattern p2 = Pattern.compile("<char>(.*?)</char>");
response = response.replaceAll("[\\r\\n]+",  "");
Matcher m2 = p2.matcher(response);

String[] chars = new String[m2.groupCount()];

It should find 2, but says 1. Can anyone help?

Answer 1

groupCount() counts the capturing groups in the Pattern , not number of matches.

The easiest way, I would think, would be to use a resizable List ( ArrayList for instance) to store your matches, and then convert it to an array if you need to ( ArrayList.toArray() )