//ExerciseException.java

public class ExerciseException
    extends Exception
{
    public ExerciseException()
    {
        super("Exercise exception thrown!");
        System.out.println("Exception thrown.");
    }

    public ExerciseException
    (
        String message
    )
    {
        super(message);
        System.out.println("ExerciseException invoked with an argument.");
    }
}