JAVA考试小程序的编写出错

Question

运行结果没有做出判断，怎么输入判断结果
都为“还得努力啊！”请问是不是做判断的算法写错了，还是check方法设置的问题还是其他参数传递的原因
题目为

运行结果

代码：

import java.util.Arrays;
import java.util.Scanner;
class Question{
    String text;
    String []options;
    Question(){}
    Question(String text,String []options){
        this.text=text;
        this.options=options;
    }
     boolean check(char []answers){
         return false;}
     void print() {}
}
class  MultiChoice extends Question{
    char[]answers;
    char[]answer;
    MultiChoice(){}
    MultiChoice(String text,String []options,char []answer){
        this.text=text;
        this.options=options;
        this.answer=answer;
        System.out.println(text);
        System.out.println(Arrays.toString(options));
    }
    boolean check(char []answers) {
        if(answers.length<answer.length||answers.length>answer.length)
        System.out.println("还得努力呀！");
        else {
    int []rest;
    rest=new int[answer.length];
    for(int i=0;i<answer.length;i++)
    {rest[i]=Arrays.binarySearch(answers, answer[i]);
    if (rest[i]<0)
    {    System.out.println("还得努力呀！");
        break;}
    else if(rest[answer.length]>0)
        System.out.println("恭喜，答对了！");
    }
        }
         return true;    
    }
}
class SingleChoice extends Question{
    char answer;
    char []answers;
    SingleChoice(){}
    SingleChoice(String text,String []options,char answer){
        this.text=text;
        this.options=options;
        this.answer=answer;
        System.out.println(text);
        System.out.println(Arrays.toString(options));
    }
    boolean check(char[] answers) {
        this.answers=answers;
        return answers[0]==answer;
            
    }
    void print() {
        if(answers.length>1||answers.length==0) 
            System.out.println("还得努力呀！");
        else if(answer==answers[0])
            System.out.println("恭喜，答对了！");
        else
            System.out.println("还得努力呀！");    
        }
    }
public class Test {
    public static void main(String args[]) {
      MultiChoice A=new MultiChoice("三国演义中的三绝是谁？",new String[]{"A.曹操","B.刘备","C.关羽","D.诸葛亮"},new char[]{'A','C','D'});    
      System.out.print("请选择：");
      Scanner sc=new Scanner(System.in);
    String x=sc.next();
    char []z;
    z=new char[x.length()];
    for(int i=0;i<x.length();i++)
     {z[i]=x.charAt(i);
    Character.toUpperCase(z[i]);}
    A.check(z);
     SingleChoice B=new SingleChoice("最早向刘备推荐诸葛亮的是谁？",new String[]{"A.徐庶","B.司马徽","C.鲁肃","D.关羽"},'A');    
     System.out.print("请选择：");
     String y=sc.next();
     char []g;
        g=new char[y.length()];
        for(int i=0;i<y.length();i++)
         {z[i]=y.charAt(i);
        Character.toUpperCase(g[i]);}
    B.check(g);
    B.print();
    sc.close();
    }
    }

Answer 1

看了一下逻辑上问题不大，但是后边变量弄错了，我图里标了一下，如果改了还不行的话你贴一下代码吧，看图片太累了

Answer 2

第二个问题你用了变量y 但是还是使用的第一个问题的答案x

Answer 3

把你报错的信息放出来。你提问题人家csdn都把模板给你弄好了