A possessive qualifier : Introduction « Regular Expressions « Java Tutorial

1. Java Tutorial
2. Regular Expressions
3. Introduction

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

public class MainClass {
  public static void main(String args[]) {
    String regex = "(\\w++)(\\d\\d)(\\w+)";
    Pattern pattern = Pattern.compile(regex);

    String candidate = "X99SuperJava";

    Matcher matcher = pattern.matcher(candidate);

    if (matcher.find()) {
      System.out.println("GROUP 0:" + matcher.group(0));
      System.out.println("GROUP 1:" + matcher.group(1));
      System.out.println("GROUP 2:" + matcher.group(2));
      System.out.println("GROUP 3:" + matcher.group(3));
    } else {
      System.out.println("NO MATCHES");
    }

    System.out.println("Done");
  }
}
/*

 */

NO MATCHES
Done