How to find first character after second dot java

Question

Do you have any ideas how could I get first character after second dot of the string.

String str1 = "test.1231.asdasd.cccc.2.a.2";
String str2 = "aaa.1.22224.sadsada";

In first case I should get a and in second 2. I thought about dividing string with dot, and extracting first character of third element. But it seems to complicated and I think there is better way.

Answer 1

How about a regex for this?

Pattern p = Pattern.compile(".+?\\..+?\\.(\\w)");
Matcher m = p.matcher(str1);

if (m.find()) {
     System.out.println(m.group(1));
}

The regex says: find anything one or more times in a non-greedy fashion (.+?), that must be followed by a dot (\\.), than again anything one or more times in a non-greedy fashion (.+?) followed by a dot (\\.). After this was matched take the first word character in the first group ((\\w)).