Creating exception types

• Exceptions are objects.
• Must extend the class Throwable or one of it's subclasses.
• By convention new exception types extend Exception (a subclass of Throwable).

    public class BadPizzaException extends Exception
    {
       public String attrName;
       BadPizzaException(String name)
       {
          super( "BadPizzaException: " + name );
          attrName = name;
       }
    }