【每日日报】第二十三天

1 今天看了学习手册第五章的内容

package XuanZeTi;

public class Question {
    String text;
    String[] options;
    public void print(){
        System.out.println(this.text);
        for(int i=0;i<this.options.length;i++){
            System.out.print(options[i]+"	");
        }
        System.out.println();
    }
    public boolean check(char[] answers){
        return false;
    }

}

package XuanZeTi;

public class SingleQuestion extends Question{
    char answer;
    public SingleQuestion (String text,String[] options,char answer){
        this.text=text;
        this.options=options;
        this.answer=answer;
    }
    public boolean check(char[] answers){
        if(answers==null||answers.length!=1){return false;}
        return this.answer==answers[0];
    }
}

package XuanZeTi;
import java.util.Arrays;

public class MultiQuestion extends Question{
    char[] answers;
    public MultiQuestion(String text,String[] options,char[] answers){
        this.text=text;
        this.options=options;
        this.answers=answers;
    }
    public boolean check(char[] answers){
        return Arrays.equals(answers, this.answers);
    }

}

package XuanZeTi;
import java.util.*;
public class PaperDemo {
    public static void main(String args[]){
        Question[] paper={null,null};
        paper[0]=new SingleQuestion("Q:谁最美？",
                new String[]{"A.范冰冰","B.刘诗诗","C.常金悦","D.杨幂"},
                'C');
        paper[1]=new MultiQuestion("Q:常金悦都玩哪些英雄？",
                new String[]{"A.孙悟空","B.庄周","C.蔡文姬","D.小乔"},
                new char[]{'B','C'});
        Scanner console=new Scanner(System.in);
        for(int i=0;i<paper.length;i++){
            Question q=paper[i];
            q.print();
            System.out.print("请选择:");
            String str = console.nextLine();
            char[] answers=str.toCharArray();
            if(q.check(answers)){
                System.out.println("真聪明！");
            }
            else{
                System.out.println("笨，这都答不上来！？");
            }
        }
        
    }

}

2 没什么问题

3 明天继续看手册