Synchronize Local Directory Tree

Downloads files from the FTP server to a local directory tree. Synchronization modes include:

mode=0: Download all files
mode=1: Download all files that do not exist on the local filesystem.
mode=2: Download newer or non-existant files.
mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server.

Download Chilkat Java Library

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[])
  {
    CkFtp2 ftp = new CkFtp2();

    boolean success;

    //  Any string unlocks the component for the 1st 30-days.
    success = ftp.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
    }

    //  Note: This is a valid FTP account that you may use for testing.
    ftp.put_Hostname("ftp.secureftp-test.com");
    ftp.put_Username("test");
    ftp.put_Password("test");

    ftp.put_KeepSessionLog(true);

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

    //  Set the current remote directory to the root of
    //  the tree to be downloaded.
    success = ftp.ChangeRemoteDir("/subDir1");
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
    }

    //  Recursively download all non-existant and newer files.
    int mode;
    mode = 2;
    success = ftp.SyncLocalTree("c:/temp/subDir1",mode);
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
    }

    ftp.Disconnect();

    //  Display the session log.
    System.out.println(ftp.sessionLog());
  }
}