简单考试系统（只包含单选，多选）的实现

---Option.java

---Question.java

    ----SingleChoice.java

    ----MultiChoice.java

---sQuestionDemo.java 

以下是具体内容：

     Option.java：

public class Option {
    //名词都写成类
    private char id;  //A  B  C
    private String text;//答案选项内容
    
    public Option(){}

    public Option (char id,String text){
        this.id=id;
        this.text=text;
    }
    
    
    public void setId(char id) {
        this.id = id;
    }
    public char getId(){
        return id;
    }
    public String getText() {
        return text;
    }
    public void setText(String text) {
        this.text = text;
    }
}

Question.java

public abstract class Question  {
    //题号
    protected  int id;
    //题干
    protected String text;
    
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getText() {
        return text;
    }
    public void setText(String text) {
        this.text = text;
    }
    
    //构造方法
    public Question(){}
    public Question(int id,String text){
        this.id=id;
        this.text=text;
    }
    
    //check方法
    public abstract boolean check(char[] answer); 
    //show方法
    public abstract void show(); 
}

SingleChoice.java

public class SingleChoice extends Question {
    /** 题干*/
    //private String text;
    /**选项*/
    private Option[] options;
    /**标准答案*/
    private char answer;
    
//    public String getText(){
//        return text;
//    }
//    public void setText(String text){
//        this.text=text;
//    }
    public Option[] getOptions(){
        return options;
    }
    public SingleChoice(){}
    public SingleChoice(int id,String text,Option[] options,char answer){
        super(id,text);
        //this.text=text;
        this.options=options;
        this.answer=answer;
    }
    
    public boolean check(char[] answer) {
        // TODO Auto-generated method stub
        //return super.check(answer);
        return answer[0]==this.answer;
    }
    public void show() {
        // TODO Auto-generated method stub
        System.out.println(id+"  "+text);
        for(int i=0;i<options.length;i++){
            Option o=options[i];
            System.out.print(o.getId()+"."+o.getText()+"\t");
        }
        System.out.println();
    }
}

MultiChoice.java

import java.util.Arrays;

public class MultiChoice extends Question {
   
    //private String text;
    private Option[] options;
    private char[] answers;
    
    public MultiChoice(){}
    public MultiChoice(int id,String text,Option[] options,char[] ansers){
        super(id,text);
        this.options=options;
        this.answers=ansers;
    }

    public Option[] getOptions() {
        return options;
    }
    public void setOptions(Option[] options) {
        this.options = options;
    }
    public char[] getAnswers() {
        return answers;
    }
    public void setAnswes(char[] answers) {
        this.answers = answers;
    }


    public boolean check(char[] answer) {
        // TODO Auto-generated method stub
//        if(this.answers.length!=answer.length){
//            return false;
//        }
        return Arrays.equals(this.answers, answer);//比较两个数组值一样。。
    }
    public void show() {
        // TODO Auto-generated method stub
        System.out.println(id+"  "+text);
        for(int i=0;i<options.length;i++){
            Option o=options[i];
            System.out.print(o.getId()+"."+o.getText()+"\t");
        }
        System.out.println();
        
        //super.show();
    }
    
}

QuestionDemo.java 

import java.util.Scanner;

public class QuestionDemo {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Question[] questionare=new Question[2];
        questionare[0]=new SingleChoice(
                1,
                "著名的和尚是谁？",
                new Option[]{
                        new Option('A',"李平"),
                        new Option('B',"小僧"),
                        new Option('C',"大业"),
                        new Option('D',"小臂")
                },
                //new char[]{'A','B','C'}
                'B'
                );
        questionare[1]=new MultiChoice(
                2,
                "著名的雷人酵母是哪几位？",
                new Option[]{
                        new Option('A',"李平"),
                        new Option('B',"小僧"),
                        new Option('C',"大业"),
                        new Option('D',"小臂")
                },
                new char[]{'A','B','C'}
                );
        Scanner console = new Scanner(System.in);
        for(int i=0;i<questionare.length;i++)
        {
            Question q= questionare[i];
            //显示问题
            q.show();
            //读取问题
            System.out.println("输入答案：");
            char []answer= console.nextLine().toCharArray();
            //比较答案与标准答案
            boolean pass = q.check(answer);
            //输出大体结果
            if(pass){
                System.out.println("牛啊！");
            }else{
                System.out.println("猪啊！！");
            }
        }
    }

}