Get matched pattern value in java regex

Question

I'm doing some transliteration with java and everything works great, but it would be nice to have matched pattern. Is it possible?

For example:

for surname GULEVSKAIA I generate such pattern

(^g+(yu|u|y)l+(io|e|ye|yo|jo|ye)(v|b|w)+(s|c)+(k|c)+a(ya|ia|ja|a|y)(a)*)

can I somehow get information, that actually matched

g

u

l

e

...

etc

As you can see, sometimes it is NOT one letter.

When you have things in ( ) in a regex, it defines a "capture group" that you can then query with Matcher methods. See this tutorial: docs.oracle.com/javase/tutorial/essential/regex/groups.html. — ajb
– ajb, Commented Sep 30, 2016 at 6:02
Thank you. So simple... I have to move all chars (like g or a) to groups, but it is not a big problem. — Oleg Gritsak
– Oleg Gritsak, Commented Sep 30, 2016 at 6:33

shripad vade · Accepted Answer · 2016-09-30 06:34:21Z

1

You may achieve this , once pattern is matched , retrive the macthed string using group() method of Matcher class passing 0 as value. then convert that string to chars array and print those characters like below

  String line = "gulevskaia";
  String pattern = "(^g+(yu|u|y)l+(io|e|ye|yo|jo|ye)(v|b|w)+(s|c)+(k|c)+a(ya|ia|ja|a|y)(a)*)";


  Pattern r = Pattern.compile(pattern);
  Matcher m = r.matcher(line);

  if (m.find( )) {
     System.out.println("Found value: " + m.group(0) );
     char chars[] =m.group(0).toCharArray();
     for(int i=0;i<chars.length;i++)
         System.out.println(chars[i]);

  }

answered Sep 30, 2016 at 6:34

shripad vade

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