java - 方法标题: error ']' expected (Java)中的数组

Question

我对数组和方法还很陌生，而且我一直在通过几个程序来看到此错误:出现错误“[”。

在每种情况下，当我进行其他调整时，它似乎都可以自我纠正，但是在这种情况下，我完全感到沮丧。

顺便说一句，我正在使用几种方法和数组来创建测验(在您问，是的，这是一个作业，我同意，列表是处理此数据的更好方法-但这不是一种选择)。

我可能在方法之间未正确传递数组，因为我对该过程有些困惑。据我了解，为了在方法之间发送/接收(即导入/导出)数组或其他变量，我必须在方法 header 参数中声明该变量/数组。

import java.util.Scanner;

public class H7pseudo
{

  public static void main(String[] args)
  {
    //call getAnswerkey method
    getAnswerkey(answerkey[i]);

    //call getAnswers method
    getAnswers(answers[i]);

    //call passed method? necessary or no?
    boolean passed = passed(answerkey[i], answers[i], qMissed[i], points);

    //Print results of grading
    if (passed)
    {
      System.out.println("Congratulations! You passed.");
    }
    else
    {
     System.out.println("Try again, sucka. You FAILED.");
    }

    //call totalPoints
    totalIncorrect(points);

    //call questionsMissed
    questionsMissed(qMissed[i]);
  }

  //get answer key (create answerkey array & export)
  public static void getAnswerkey(answerkey[i])
  {
    //create answerkey array here
    char[] answerkey;

    //determine number of questions (indices)
    answerkey = new char[20];

    //input values (correct answers) for each index
    //for our purposes today, the answer is always 'c'.
    for (int i = 0; i <=20; i++)
    {
      answerkey[i] = 'c';
    }
  }

  //get student answers (create answers array & export)
  public static void getAnswers(answers[i])
  {
    //initialize scanner for user input
    Scanner scan = new Scanner(System.in);

    //create answer array here
    char[] answers;

    //determine number of questions (indices)
    answers = new char[20];

    //prompt for user input as values of each index
    for (int i = 0; i <= 20; i++) {
      answers[i] = scan.nextChar();
    }
  }

  //grade student answers (import & compare index values of arrays:answers&answerkey
  //create & export qMissed array
  public static boolean passed(answerkey[i], answers[i], qMissed[i], points)
  {
     int points = 0;

     //create new array: qMissed
     boolean[] qMissed;

     //determine number of questions to be graded
     qMissed = new boolean[20];

     //initialize values for array
     for (int i = 0; i <= 20; i++) {
       qMissed[i] = false;
     }

     //cycle through indices of answerkey[i] & answers[i];
     for (int i = 0; i =< 20; i++)
     {
       if (answers[i] == answerkey[i])
       {
         correct = true;
         points = points+1;
         qMissed[i] = true;
       }
       else {
         qMissed[i] = false;
       }
     }

     //evaluate whether or not the student passed (15+ correct answers)
     if (points >= 15)
     {
       passed = true;
     }
     else
     {
       passed = false;
     }
     return passed;
   }

  public static void totalIncorrect(points)
  {
    int missed = 20 - points;
    System.out.println("You missed " + missed + " questions.");
  }


  public static void questionsMissed(qMissed[i])
  {
    // for each index of the array qMissed...
    for (int i = 0; i < qMissed.length; i++)
    {
      //...print correct and false answers.
      system.out.println(i + ": " + qMissed[i] + "\n");
    }
  }


}

Answer 1

您无法在Java中的方法签名中定义数组大小。