Error: Cannot delete a.txt:It is being used by another person or program

[trill]

Hi, My problem here is after I ran my code, I cant delete the origin file that I have ftp it. For example, I ftp C:\a\a.txt to /home/trill/upload/a.txt. After doing this, I need to delete C:\a\a.txt but I got this message "Cannot delete a.txt:It is being used by another person or program".
Anyone knows what wrong with my code here?

Code:

BufferedReader reader = null;
Ftp ftp = null;
String tmp = null;
InetAddress Inet = null;
try{
String lStrUploadFileLog = "C:/FTPLog/FTPLog_05122003.log";
String lStrUploadFilePath = "/home/trill/upload/";
String lStrFTP_USER = "trill";
String lStrFTP_PWD = "password";
String lStrFTP_IP = "192.168.1.100";
String lStrLogFileDate = "LOG_FILE_DATE";

reader = new BufferedReader(new FileReader(new File(lStrUploadFileLog)));
Inet = InetAddress.getByName(lStrFTP_IP);
tmp = reader.readLine();
ftp = new Ftp(Inet,lStrFTP_USER,lStrFTP_PWD);
ftp.setType(ftp.BINARY);

if(tmp != null){
System.out.println("lStrUploadFileLog = "+lStrUploadFileLog);
System.out.println("lStrUploadFilePath+lStrLogFileDate = "+(lStrUploadFilePath+lStrLogFileDate));
ftp.startPut(lStrUploadFileLog,lStrUploadFilePath+lStrLogFileDate);
System.out.println("tmp = "+tmp);
StringTokenizer strtmp = new StringTokenizer(tmp,",");
int size_strtmp = strtmp.countTokens();

while (size_strtmp>0){
String lStrUploadFile = strtmp.nextToken();
size_strtmp--;
StringTokenizer strlStrUploadFile = new StringTokenizer(lStrUploadFile,"\\");
int size_strlStrUploadFile = strlStrUploadFile.countTokens();
String substr = lStrUploadFile.substring(lStrUploadFile.lastIndexOf("\\")+1,lStrUploadFile.length());

ftp.startPut(lStrUploadFile,lStrUploadFilePath+substr);
ftp.waitUntilTransferComplete();

System.out.println("File(s) download completed!");
}
try {
File ff = new File(lStrUploadFileLog);
System.out.println(ff.getAbsolutePath());
boolean state = ff.delete();
System.out.println(state);
} catch ( SecurityException se ) {
System.out.println("Error SecurityException: "+se );
se.printStackTrace();
}
catch(Exception e){
System.out.println("Error Exception1: "+e );
e.printStackTrace();
}
}
System.out.println("Upload to server completed!!!");
}catch(Exception e){

System.out.println("Error Exception: "+e);
}
finally{
if(reader != null)
reader.close();
if(ftp != null)
ftp.close();
reader = null;
ftp = null;
tmp = null;
Inet = null;
}

Thanks.

[toby]

Its simple. start up in safe mode and simply delete the file. if that doesn't work try opening NOTEPAD and saving blank as same type of file you are trying to delete. hope this works for you.