Java tutorial
import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static void main(String args[]) { Pattern p = Pattern.compile("t(est)"); String candidateString = "This is a test. This is another test."; Matcher matcher = p.matcher(candidateString); // Find group number 0 of the first find matcher.find(); String group_0 = matcher.group(0); String group_1 = matcher.group(1); System.out.println("Group 0 " + group_0); System.out.println("Group 1 " + group_1); System.out.println(candidateString); } }