(Java) Append to Existing File on FTP Server

Uploads a file to the FTP server. If the remote file (on the FTP server) does not already exist, it is created. Otherwise the uploaded file is appended to the remote file.

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux, Solaris Java Libs for Android

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkFtp2 ftp = new CkFtp2();

    ftp.put_Hostname("ftp.myftpserver.com");
    ftp.put_Username("myUsername");
    ftp.put_Password("myPassword");

    // Connect to the FTP server.
    boolean success = ftp.ConnectOnly();
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
        }

    // Authenticate with the FTP server.
    success = ftp.LoginAfterConnectOnly();
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
        }

    String localFilePath = "/someDirectory/hamlet.xml";
    String remoteFilename = "hamlet.xml";

    // Upload to the FTP server, creating the file if it does not yet exist
    // on the FTP server, or appending to the remote file if it already exists.
    success = ftp.AppendFile(localFilePath,remoteFilename);
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
        }

    ftp.Disconnect();

    System.out.println("Success.");
  }
}