java - Java 文件未找到异常

Question

我正在尝试为扫雷游戏制作一个简单的高分系统。但是，我不断收到文件未找到的异常，并且我也尝试使用该文件的完整路径。

package minesweeper;

import java.io.*;
import java.util.*;

public class Highscore{

 public static void submitHighscore(String difficulty) throws IOException{
  int easy = 99999;
  int normal = 99999;
  int hard = 99999;
  //int newScore = (int) MinesweeperView.getTime();
  int newScore = 10;
  File f = new File("Highscores.dat");

  if (!f.exists()){
   f.createNewFile();

  } 
  Scanner input = new Scanner(f); 
  PrintStream output = new PrintStream(f);

  if (input.hasNextInt()){
   easy = input.nextInt();
   normal = input.nextInt();
   hard = input.nextInt();
  }

  output.flush();



  if(difficulty.equals("easy")){
   if (easy > newScore){
   easy = newScore;
   }
  }else if (difficulty.equals("normal")){
   if (normal > newScore){
   normal = newScore;
   }
  }else if (difficulty.equals("hard")){
   if (hard > newScore){
   hard = newScore;
   }
  }
  output.println(easy);
  output.println(normal);
  output.println(hard);

 }

//temporary main method used for debugging

 public static void main(String[] args) throws IOException {
  submitHighscore("easy");
 }  

}

Answer 1

您没有透露异常是在哪一行代码上发出的​​。 (注意:不发布您所掌握的有关该问题的所有信息会降低您获得有用答案的机会。)

但是，我的预感是它来自如下所示的第二次调用，在这种情况下，问题在于尝试打开文件两次:

Scanner input = new Scanner(f); 
PrintStream output = new PrintStream(f);