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About Byron Kiourtzoglou

Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.

Matcher end example

With this example we are going to demonstrate how to use Matcher.end() API method to get the offset after the last character matched against a pattern. In short, to use Matcher.end() API method you should:

  • Compile a String regular expression to a Pattern, using compile(String regex) API method of Pattern.
  • Use an initial String to be matched against the Pattern.
  • Use matcher(CharSequence input) API method of Pattern to create a Matcher that will match the given String input against this pattern.
  • Find the first subsequence of the input sequence that matches the pattern, using find() API method of Matcher.
  • Get the offset after the last character matched, with end() API method of Matcher.
  • Find the next subsequence of the input sequence that matches the pattern and get the offset after the last character matched.

Let’s take a look at the code snippet that follows:

package com.javacodegeeks.snippets.core;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class MatcherEnd {
    
  public static void main(String args[]) {
    
    String str = "My name is Bond. James Bond.";
    
    String mHelper[] = { "

   ^",

  "



   ^" };
    Pattern pattern = Pattern.compile("Bond");
    Matcher m = pattern.matcher(str);

    m.find();
    int end = m.end();
    System.out.println(str);
    System.out.println(mHelper[0] + end);

    m.find();
    int next = m.end();
    System.out.println(str);
    System.out.println(mHelper[1] + next);
  
  }
}

Output:

My name is Bond. James Bond.


   ^15
My name is Bond. James Bond.




   ^27

This was an example of Matcher.end() API method in Java.

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