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Asked: 2026-06-09T16:07:20+00:00

Possible duplicate: Print regex matches in java I am using Matcher class in java

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Possible duplicate: Print regex matches in java

I am using Matcher class in java to match a string with a particular regular expression which I converted into a Pattern using the Pattern class. I know my regex works because when I do Matcher.find(), I am getting true values where I am supposed to. But I want to print out the stings that are producing those true values (meaning print out the strings that match my regex) and I don’t see a method in the matcher class to achieve that. Please do let me know if anyone has encountered such a problem before. I apologize as this question is fairly rudimentary but I am fairly new to regex and hence am still finding my way around the regex world.

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1 Answer

  1. Editorial Team

    Assuming mis your matcher:

    m.group() will return the matched string.

    [EDIT] Added info regarding matched groups

    Also, if your regex has portions inside parenthesis, m.group(n) will return the string that matches the nth group inside parenthesis;

    Pattern p = Pattern.compile("mary (.*) bob");
Matcher m = p.matcher("since that day mary loves bob");

    m.group() returns “mary loves bob”.
    m.group(1) return “loves”.

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