paper.java

java考试系统简单版

package exam.model;
import java.util.ArrayList;
import java.util.List;

public class Paper {
	private String subject;//科目
	private List<Question> allQuestions;//所有试题对象
	private int[] answers;//学生的选择
	
	public Paper(String subject,List<Question> allQuestions){
		this.subject=subject;
		this.allQuestions=allQuestions;
		answers=new int[20];
		for(int i=0;i<answers.length;i++){
			answers[i]=-1;
		}
	}
	
	public Paper(String subject){
		this.subject=subject;
		allQuestions=new ArrayList<Question>();
		answers=new int[20];
		for(int i=0;i<answers.length;i++){
			answers[i]=-1;
		}
	}
	
	public boolean addQuestion(Question q){
		return allQuestions.add(q);
	}
	
	public String toString(){
		StringBuffer sb=new StringBuffer(subject+"考试试题\n");
		for(int i=0;i<allQuestions.size();i++){
			sb.append((i+1)+","+allQuestions.get(i));
		}
		return sb.toString();
	}

	public String getSubject() {
		return subject;
	}
	
	public Question getQuestion(int index){
		return allQuestions.get(index);
	}
	
	public void setAnswer(int index,int answer){
		answers[index]=answer;
	}
	
	public int size(){
		return allQuestions.size();
	}
	public int[] getAnswer(){
		return answers;
	}

}