validate a ip address in java (ipv4)

static boolean validate(String ipv4_address) {

  int seperators = 0;
  int digits = 0;
  int partval = 0;

  if (ipv4_address.length() > 16)  return false; // length condition satisfied
  
  else {
    for (int i = 0; i < ipv4_address.length(); i++) {

      if (ipv4_address.charAt(i) == '.') {
      seperators++;
      digits = 0;
      partval = 0;
       
        if (seperators >= 4)
        return false; // checked the no of . 's in the address
        } else {

            if (!Character.isDigit(ipv4_address.charAt(i))) {
            return false;
            }
     
          partval = partval * 10 + Integer.parseInt(Character.toString(ipv4_address.charAt(i)));
    
             if (++digits > 3)
             return false;
             
               if (digits == 3) {

                 if (partval > 255) return false;
               }
       }
    }

  }

  return true;
}