Groups.java Source code

Introduction

Here is the source code for Groups.java

Source

// : c12:Groups.java
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

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

public class Groups {
    static public final String poem = "Twas brillig, and the slithy toves\n" + "Did gyre and gimble in the wabe.\n"
            + "All mimsy were the borogoves,\n" + "And the mome raths outgrabe.\n\n"
            + "Beware the Jabberwock, my son,\n" + "The jaws that bite, the claws that catch.\n"
            + "Beware the Jubjub bird, and shun\n" + "The frumious Bandersnatch.";

    public static void main(String[] args) {
        Matcher m = Pattern.compile("(?m)(\\S+)\\s+((\\S+)\\s+(\\S+))$").matcher(poem);
        while (m.find()) {
            for (int j = 0; j <= m.groupCount(); j++)
                System.out.print("[" + m.group(j) + "]");
            System.out.println();
        }

    }
} ///:~