Regex (regular expression) password check with Java

Our String is
aaaaaZZaa44

and with the regular
((?=.*\\d)(?=.*[a-z])(?=.*[A-Z]).{6,})

we check if our password contains at least one digit, one upper and lower case.
we also check the length of the password, if its greater than 6.

import java.util.regex.*;
public class RegexPwdCheck {


	public static void main(String[] args) {

		String passwd = "aaaaaZZaa44"; 
		String pattern = "((?=.*\\d)(?=.*[a-z])(?=.*[A-Z]).{6,})";
		System.out.println(passwd.matches(pattern));

	}
}

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