abstractanswerset.java

考试系统

package paper;

import java.io.Serializable;

/**
 * @author SpiritRain
 *
 * Abstract class of Answer set
 * which contains all of the key answers
 *   
 */
public abstract class AbstractAnswerSet implements Serializable {

	/**
	 * key answers
	 */
	protected AbstractAnswer key;

	/**
	 * create an answer set with key
	 * @param key key answer of the question
	 */
	public AbstractAnswerSet(AbstractAnswer key) {
		this.key = key;
	}

	/**
	 * check whether the ans is correct
	 * @param ans the answer to be checked
	 * @return ture if answer is correct,false otherwise
	 */
	public abstract boolean check(AbstractAnswer ans);

	/**
	 * @return key of the answer
	 */
	public AbstractAnswer getKey() {
		return key;
	}
}