的Java從.txt文件中讀取數據，並將其輸出到output.txt的文件

Question

我的代碼：

import java.io.*; 
public class ProgramSix { 

    public int count(String fileName, char charToSerach) throws FileNotFoundException, IOException { 

     char lower = Character.toLowerCase(charToSerach); 
     char upper = Character.toUpperCase(charToSerach); 

     int count = 0; 

     try (BufferedReader reader = new BufferedReader(new FileReader("xanadu.txt"))) { 
      int ch = 0; 
      while ((ch = reader.read()) != -1) { 
       if (lower == ch || upper == ch) { 
        count++; 
       } 
      } 
     } 
     System.out.println("The character '" + charToSerach + "' appears: " + count + " times in the .txt file"); 
     return count; 
    } 

    public static void main(String[] args) { 
     // TODO Auto-generated method stub 
     try { 
      Program6 program6 = new Program6(); 

      String fileName = "xanadu"; 
      int numAs = programSix.count(fileName, 'a'); 
      int numBs = programSix.count(fileName, 'b'); 
      int numCs = programSix.count(fileName, 'c'); 

     } catch (Throwable e) { 
      e.printStackTrace(); 
     } 
    } 
} 

所以現在我的代碼正確地給出了輸出：給予時代的人物的一個'數b'和'c'出現在我的.txt文件中。現在讀取相同的.txt文件並在output.txt文件中發出三個不同的字母以及它們發生的次數的最佳方式是什麼？

Answer 1

您使用了錯誤的類

看到

class ProgramSix 

VS

Program6 program6 = new Program6();