Validating the Person Name using java

Validating user input is the bane of every software developer's existence.Regular expression can be used effectively for doing form validation.

public static boolean validatePersonName(String objText) {
        // 1) must more than 2 char
  // 2) can not be the following char
    
  String strInValidate = "`~!@#$%^&*()_+=[]{}\\|;:\",/<>?0123456789";
  try {

   
   for (int i = 0; i < objText.length(); i++) {
    if (strInValidate.indexOf(objText.substring(i, i + 1)) !=-1) {
     return false;
    }     
   }
   return true;
  } catch (Exception e) {
   return false;
  }

 }