package ejava.examples.webtier.dao;
   
   public class StudentDAOException extends RuntimeException {
       private static final long serialVersionUID = 1L;
       public StudentDAOException() {}
       public StudentDAOException(String message) { super(message); }
       public StudentDAOException(String message, Throwable th) { 
           super(message, th); 
       }
      public StudentDAOException(Throwable th) { 
          super(th); 
      }
  }