(Java) Use Explicit FTP over TLS

Demonstrates how to connect to an FTP server using explicit FTP over TLS.

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux 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.your-ftp-server.com");
    ftp.put_Username("ftpAccountLogin");
    ftp.put_Password("ftpAccountPassword");

    // Indicate that the "AUTH TLS" command should be use to convert the connection to TLS
    // after the initial TCP connection to port 21 is established.
    ftp.put_AuthTls(true);

    // Connect and convert the connection to TLS automatically.
    boolean success = ftp.ConnectOnly();
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
        }

    success = ftp.LoginAfterConnectOnly();
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
        }

    System.out.println("TLS connection established and successfully authenticated.");
  }
}