/**
   Exception thrown by Queue methods front and dequeue when the queue is empty.

   @author      Franck van Breugel
   @version     1.1   May 5, 2000
*/
public class QueueEmptyException extends RuntimeException 
{
    /** Constructs a QueueEmptyException without error message. */
    public QueueEmptyException() 
    {
        super();
    }

    /** 
	Constructs a QueueEmptyException with the specified error message.

	@param errorMessage Error message.
    */
    public QueueEmptyException(String errorMessage) 
    {
        super(errorMessage);
    }
}