import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "aa|bb|cc|dd|ee|ff|gg|hh|ii|jj|kk|ll|oo|pp";
final String string = "been, beer, beet, beep, bell, boom, boot, book, bull, butt, call, cell, coon, dell, doll, door, doom, fall, fell, feel, feet, foot, food, fool, fuss, full, gull, gall, hall, hell, heed, heel, hill, hull, hoop, hood, hoof, hoot, Jeff, jeep, Jill, Judd, keen, keel, keep, less, lees, Matt, mall, need, peel, pall, pool, poof, poll, poor, peek, pass, root, reel, reef, reed, roll, room, rood, sass, sell, seen, seem, seed, seek, seer, seep, soon, soot, sill, tall, tell, teen, teem, teed, Todd, tool, wall, well, watt, weed, week, and weep.";
final Pattern pattern = Pattern.compile(regex);
final Matcher matcher = pattern.matcher(string);
while (matcher.find()) {
System.out.println("Full match: " + matcher.group(0));
for (int i = 1; i <= matcher.groupCount(); i++) {
System.out.println("Group " + i + ": " + matcher.group(i));
}
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html