Help on ftpClient

Question

Hi there,
I am a Oracle Developer and I would request your help in using ftpClient. I am using following code for ftping files and then deleting them from the ftp server.
import java.io.*;
import oracle.sql.*;
import java.io.IOException;
import sun.net.TransferProtocolClient;
import sun.net.ftp.FtpClient;
import java.util.Enumeration;
import java.util.Vector;
import FullFtpClient;
public class ORIX_ftp
public static int fget
String host, //FTP server ip address or name
NUMBER port, //FTP server ftp port number
String username, //FTP server username
String password, //FTP server password
String transtype, //FTP transfer type "ASCII" or "BINARY"
String remotedir, //Remote or FTP server directory path from where files will be fetched
String localdir, //Local or Oracle server directory path where files will be fetched
String filenames, //File names seperated by on Remote or FTP server to be fetched from the
String deletefile, //Delete file after file transfer from FTP Server to Database Server
String ErrorMessage[]
FullFtpClient FullFtpClient = new FullFtpClient();
int ErrorStatus = 0;
try
FullFtpClient = new FullFtpClient(host, port.intValue()); //Making FTP connection
FullFtpClient.login(username, password); //Logging on to FTP server
if (transtype == "ASCII")
FullFtpClient.ascii(); //Setting FTP transfer to ascii mode
if (transtype == "BINARY")
FullFtpClient.binary(); //Setting FTP transfer to binary mode
//ftpClient.cd(remotedir); //Set remote or FTP server directory
if (null != filenames)
int StartIndex = 0, PosIndex = 0;
String fname;
InputStream is;
int length;
byte[] buffer;
File file_out;
OutputStream os;
while (-1 != (PosIndex = filenames.indexOf("///",StartIndex)))
//For each filename the file will be fetched
fname = filenames.substring(StartIndex,PosIndex);
is = FullFtpClient.get(fname);
length = 1;
buffer = new byte[1024];
file_out = new File(localdir + "\\" + fname);
os = new FileOutputStream (file_out);
while((length = is.read(buffer)) != -1)
os.write(buffer, 0, length);
PosIndex += 3;
StartIndex = PosIndex;
if (deletefile != null)
FullFtpClient.delete (fname); // Remove file from FTP server
// Last, or only, filename;
if (StartIndex < filenames.length())
fname = filenames.substring(StartIndex);
is = FullFtpClient.get(fname);
length = 1;
buffer = new byte[1024];
file_out= new File(localdir + "\\" + fname);
os = new FileOutputStream (file_out);
while((length = is.read(buffer)) != -1)
os.write(buffer, 0, length);
if (deletefile != null)
FullFtpClient.delete (fname); // Remove file from FTP server
if (FullFtpClient != null)
// FullFtpClient.delete (filenames);
FullFtpClient.closeServer(); //Closing the FTP connection
catch (Exception e)
ErrorMessage[0] = e.toString();
ErrorStatus = 1;
return ErrorStatus;
Although I am catching the Exception, I get exceptions such as NullPointerException and Dele command could not delete file because access denied.
What I want is to transfer the file from ftp server and then delete it only after the transfer is complete. Secondly I want to handle any exception whatsoever arises during the execution of this code.
You help will be of gr8 help.
Thanx a lot
Alok

Answer 1

That is because I don't want to pile the files on the ftp server. Actually the file is transferred from ftp server on to the oracle server, then using javamail its sent to the user and after that there is no point keeping that file on the server. So I want to delete it from both the servers. I am able to delete the file from oracle server but I am unable to delete it from ftp server. Your help would be greatly appreciated.
Thanks & regards,
Alok