import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Main {
public static void main(String args[]) {
Pattern p = Pattern.compile("\\d");
Matcher m1 = p.matcher("55");
Matcher m2 = p.matcher("fdshfdgdfh");
System.out.println(m1.pattern() == m2.pattern());
// return true
}
}