Security number validation

Question

hi i have to validate security number based on tHIS REQUEST
if the SECURITYNNUBER IS INVALID UNDER THE SECURITYNUMBER attribute,it must reject(Date & algorith). To override the normal validation,the subject must contain INVALIDSECURITYNUMBER. The incorrect ID number must still reflect in the SECURITYNUMBER attribute.
THE FIRST 6 DIGIT IS DATE
EXAMPLE 7701205334086
public boolean val_SECURITYNUMBER()
        boolean flag = true;
        String u_Securtynr = transactionFile.getS_securtynumber();
        // 1. Invalid securty number if completed
            if(!isBlank(u_Securtynr))
                //if(isValidPattern(u_Securtynr, "[0-9]{13}") && isValidDate(u_Securtynr.substring(0,6), "[0-9]{6}", "yyMMdd"))
                    if(!isValidsecuritynumber(u_Securtynr))
                        if(!isEqualTo(monetaryDetail.getmSubject(), "INVALIDSECURITYNUMBER"))
                              System.out.println("SECURITY " + ERRORCODE 222)
                }else
                      System.out.println("SECURITY " + ERRORCODE 322)
public boolean isValidPattern(String s_value, String s_pattern)
        boolean flag = false;
        if(Pattern.matches(s_pattern, s_value))
            flag = true;
         return flag;
public boolean isValidsecuritynumber(String s_idNumber)
        //boolean flag = false;
        String sIdNumber = s_idNumber;
        int odd = 0;
        int num ;
        if(!isValidPattern(sIdNumber, "[0-9]{13}"))
            return false;
        }else
            try
            //(1)Add all numbers at Odd places
            for(int x = 0; x < 6; x++)
                odd = Integer.parseInt(sIdNumber.charAt(2*x)+"") + odd;
            int Total_A = odd;
            //(2)Combine the even numbered
            String s_even = "";
            for(int y = 0; y <6; y++)
                s_even += sIdNumber.charAt(2*y + 1);
            num = (Integer.parseInt(s_even));
            //(3) s_even x 2
            int numID = num * 2;
            String s_Total3 = numID+"";
            //(4)
            int total4 = 0;
            for(int z=0;z<s_Total3.length();z++)
                total4 += Integer.parseInt(s_Total3.charAt(z)+"");
            int i_secondLast = Total_A + total4;
            String s_secondLast = i_secondLast+"";
            int i_total5 = 10-(Integer.parseInt(s_secondLast.charAt(1)+""));
            if(i_total5 == 10)
                i_total5 = 0;
            if(i_total5 == Integer.parseInt(sIdNumber.charAt(12)+""))
                return true;
            }else
                return false;
            }catch(IndexOutOfBoundsException ioex)
                return false;
        //return flag;

Answer 1

yes how can i do this
if the ID id is invalid under the idnumber attribute,it must reject(Date & algorith). To override the normal validation,the subject must contain INVALIDIDNUMBER. The incorrect ID number must still reflect in the IDNUMBER attribute.
the first 6 digit is date
example 7701205334086
i was not shooting