如何在java中更新文本文件的某些部分

我希望能够更新文本文件上的某一行。但我得到的错误是它不能删除文件，为什么我会得到这个错误？如何在java中更新文本文件的某些部分

public class Main { 
    public static void main(String[] args) { 
     Main rlf = new Main(); 
     rlf.removeLineFromFile("F:\\text.txt", "bbb"); 
    } 

    public void removeLineFromFile(String file, String lineToRemove) { 
     try { 
      File inFile = new File(file); 

      if (!inFile.isFile()) { 
       System.out.println("Parameter is not an existing file"); 
       return; 
      } 

      //Construct the new file that will later be renamed to the original filename. 
      File tempFile = new File(inFile.getAbsolutePath() + ".tmp"); 

      BufferedReader br = new BufferedReader(new FileReader(file)); 
      PrintWriter pw = new PrintWriter(new FileWriter(tempFile)); 

      String line = null; 

      //Read from the original file and write to the new 
      //unless content matches data to be removed. 
      while ((line = br.readLine()) != null) { 

       if (!line.trim().equals(lineToRemove)) { 

        pw.println(line); 
        pw.flush(); 
       } 
      } 
      pw.close(); 
      br.close(); 

      //Delete the original file 
      if (!inFile.delete()) { 
       System.out.println("Could not delete file"); 
       return; 
      } 

      //Rename the new file to the filename the original file had. 
      if (!tempFile.renameTo(inFile)) System.out.println("Could not rename file"); 

     } 
     catch (FileNotFoundException ex) { 
      ex.printStackTrace(); 
     } 
     catch (IOException ex) { 
      ex.printStackTrace(); 
     } 
    } 
}

来源

2010-10-07 user225269

你有写访问F驱动器？ – 2010-10-07 03:08:22

如果您先关闭文件，您可以删除该文件吗？ – 2010-10-07 03:10:38

哪一行发生异常？ – jjnguy 2010-10-07 03:12:56