Matcher Groups
// : 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();
}
}
} ///:~
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