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);
matcher.find();
int startIndex = matcher.start(0);
System.out.println(candidateString);
System.out.println(startIndex);
}
}