waitinglineemptyexception.java

来自「国外的数据结构与算法分析用书」· Java 代码 · 共 20 行

/**	This exception is used whenever the wiating line should
	have atlest one customer, but it is empty. */
public class WaitingLineEmptyException extends Exception
{
	/**	Create an exception with the specified message 
		Analysis: Time = O(1) */
	public WaitingLineEmptyException(String message)
	{
		super(message);
	}

	/**	Create an exception with the default message 
		Analysis: Time = O(1) */
	public WaitingLineEmptyException()
	{
		super("The waiting line is empty when it should not be!");
	}

} /* end of WaitingLineEmptyException */