带有Dr Java的MacBook Pro上的文件

Question

我是编码的新手，由于某些原因，我无法将文件路径复制到Java中。我一直在尝试复制和粘贴文件路径以及绑定文件路径，无论我做什么，Java博士都找不到该文件。我一直在尝试找到解决方案，但是找不到可行的解决方案。我尝试使用[this]：How to provide file path in Mac OS X while creating a file in java?作为参考/解决方案，但它对我不起作用。这是我遇到问题的代码。

   import java.util.Scanner;
   import java.io.File;
   import java.io.FileNotFoundException;

  public class GradeExam6{
    public static void main(String [] args) throws FileNotFoundException{ //  gives the file not found exception when a file is enteres that does not exist or that cannot be located

Scanner sc = new Scanner(System.in);

System.out.println("Enter the name of the file."); // gets the file from the user
String fileName = sc.nextLine(); // stores the file that the user wants read

File file = new File(fileName);
Scanner reader = new Scanner (file);

 String line = reader.nextLine();
 String answer = null; 

//arrays 
 String [][] student = new String[100][2];
 int [] results = new int[100]; 

 int b=0;

while(line!= null){
  if(b == 0)
   answer = line;
 else{
   student[b-1]=line.split(" ",2);
 }
 b++;
}
  for(int a=0; a < b-1; a++){
     int score = 0;
  for(int c=0; c<answer.length(); c++){
   if(answer.charAt(a) == student[b][1].charAt(a)){
     score+=2; // adds 2 points to the score if the answer is correct 
    }
 else if(student[b][1].charAt(a) == ' '){ // does not count or take off from the score because the answer is blank
}
 else{
  score-=1; // takes off 1 point if the answer is wrong
     }
   }
  results[b]=score; // gets the total score
}
  for(int a=0; a < b-1; a++){
     System.out.println("Student ID Number: " +student[b][0]); // gives the student's id number
     System.out.println("Student Answers: " +student[b][1]); // gives the student's test answers 
     System.out.println("Score: " +results[b]); // gives the student's test score

  sc.close();
  reader.close();// closes the scanners
    }
   }
  }

我正在尝试使用一个简单的.txt文件。