使用Java語言編寫的文件，找到finalAverage

Question

這裏是我的代碼：

import java.io.File; 
import java.util.Random; 
import java.util.Scanner; 
import java.io.IOException; 
import java.io.PrintWriter; 

public class BottleCapPrize{ 

    public static void main(String args[]) throws IOException{ 

     // create .txt file 
     PrintWriter outFile = new PrintWriter(new File("05.06 Desk Check.txt")); 

     // create Scanner object 
     Scanner in = new Scanner(System.in); 

     // prompt user for number of trials 
     System.out.print("Please enter how much times you want to perform the trial: "); 

     // create variable for recieving input 
     int input = in.nextInt(); 

     // create count variable 
     int count = 1; 

     // create range variable 
     int range; 

     // create average 
     double average = 0.0; 

     // create Random object 
     Random random = new Random(); 

     // while loop for trials 
     while(count <= input){ 

      // create Random range 
      range = random.nextInt(5) + 1; 

      // calculate average 
      average += range; 

      // increment count 
      count++; 
     } 

     // calculate final average 
     double finalAverage = average/count; 

     // display final average 
     System.out.println("The average of you winning the prize is: " 
       + finalAverage); 

     // display average in file 
     outFile.println("The average of you winning the prize is: " 
       + finalAverage); 
    } 
} 

當我運行這個程序，我希望它不僅顯示在控制檯上而且在一個名爲「文件最終平均05.06 DeskCheck.txt「，它是在上面的代碼中創建的，但是當我運行它時，它只是在控制檯中顯示finalAverage並打開一個名爲」05.06 Desk Check.txt「的空白文件。我該如何解決這個問題，以便它還會在文件中顯示finalAverage？

Answer 1

您需要關閉PrintWriter才能將內容刷新到該文件。嘗試添加此：

outFile.close(); 

Answer 2

我想你將不得不關閉文件..

outfile.close();