question.java

一个用Java编写的问答程序

package qa;

public abstract class Question 
{
	private Answer answer;
	private String questionText;
	private Question hintQ;
	
	protected Question()
	{
	
	}
	
	protected Question(Answer a, String text)
	{
		answer = a;
		questionText = text;
	}
	
	public void setAnswer(Answer a)
	{
		answer = a;
	}
	
	public Answer getAnswer()
	{
		return answer;
	}
	
	public void setQuestionText(String text)
	{
		questionText = text;
	}
			
	public String ask()
	{
		return questionText;
	}
	
	public void setHint(Question q) throws Exception
	{
		if (q.getAnswer() == hintQ.getAnswer())
		{
			throw new Exception();
		}
		else hintQ = q;
	}
	
	public String getHint()
	{
		return hintQ.ask();
	}
	

}