import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Main {
public static void main(String args[]) {
Pattern p = Pattern.compile("test", Pattern.CASE_INSENSITIVE);
String candidateString = "Test.";
Matcher matcher = p.matcher(candidateString);
matcher.find(0);
System.out.println(matcher.group());
}
}