Regex date format validation (11_digit_identification_number date_of_birth_with_following_format_dd.mm.yyyy)

import java.util.regex.Matcher; import java.util.regex.Pattern; public class Test {        public static void main( String args[] ) {               String line[] = {"96325587410 10.01.1980", "96325587410 8.4.1988",                           "96325587410 31.12.2000", "96325587410 70.01.2000",                                  "96325587410 1-01-1980", "216235456242334458 10.01.1980",                            "21652334458 10.01.2980"};               String pattern = "\\A\\s*\\d{11}\\s*(0?[1-9]|[12][0-9]|3[01])\\.(0?[1-9]|1[012])\\.((19|20)\\d\\d)\\s*\\Z";               String parameters  = "\\A\\s*(\\d{11})\\s*((0?[1-9]|[12][0-9]|3[01]).(0?[1-9]|1[012]).((19|20)\\d\\d))\\s*\\Z";               for(int i = 0; i< line.length ; i++) {                      Pattern r = Pattern.compile(pattern);                      Matcher m = r.matcher(line[i]);                      System.out.println("KEYWORD: " + line[i]);                                           if (m.find( )) {                            Pattern cno = Pattern.compile(parameters);                            Matcher m1 = cno.matcher(line[i]);                            if(m1.find( )) {                                   System.out.println("--> identityno: " + m1.group(1));                                   System.out.println("--> dateofbirth: " + m1.group(2) );                            }                                                 } else {                            System.out.println("---> NO MATCH");                      }                                           System.out.println("---------------------------------------");               }        } }

OUTPUT: KEYWORD: 96325587410 10.01.1980 --> identityno: 96325587410 --> dateofbirth: 10.01.1980 --------------------------------------------- KEYWORD: 96325587410 8.4.1988 --> identityno: 96325587410 --> dateofbirth: 8.4.1988 --------------------------------------------- KEYWORD: 96325587410 31.12.2000 --> identityno: 96325587410 --> dateofbirth: 31.12.2000 --------------------------------------------- KEYWORD: 96325587410 70.01.2000 ---> NO MATCH --------------------------------------------- KEYWORD: 96325587410 1-01-1980 ---> NO MATCH --------------------------------------------- KEYWORD: 216235456242334458 10.01.1980 ---> NO MATCH --------------------------------------------- KEYWORD: 21652334458 10.01.2980 ---> NO MATCH ---------------------------------------------

(?i) and (?-i) in regex means

(?i) turns on case-insensitive mode, (?-i) turns it off.

For example:
For regex (?i)ed(?-i)a 
 - matches with the following words: eda, Eda, eDa, EDa
 - does not match with the following words: edA, EdA, eDA, EDA

java.util.regex.PatternSyntaxException: Illegal/unsupported escape sequence near index 2

BUG:
I have the following String:
           String keyword = '\AMore\s*Code\Z';
and i want to replace regexs as following:
             keyword.replace("[\\A", "").replace("[\\Z", "").replace("[\\s*", " ") : "";
But i got the following error:
java.util.regex.PatternSyntaxException: Illegal/unsupported escape sequence near index 2

FIX:
Use the java.util.regex.Pattern to escape special characters in regex:
  keyword = Pattern.compile("\\\\A").matcher(keyword).replaceAll(" ");