Get FTP Directory Listing Information

Java example showing how to get information about files and subdirectories in the current remote FTP directory.

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;
    }

    ftp.put_Hostname("www.example-code.com");
    ftp.put_Username("****");
    ftp.put_Password("****");

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

    //  The ListPattern property is our directory listing filter.
    //  The default value is "*", which includes everything.
    System.out.println(ftp.listPattern());

    //  To get file and sub-directory information, simply
    //  loop from 0 to ftp.NumFilesAndDirs - 1
    int i;
    int n;
    n = (int) ftp.get_NumFilesAndDirs();
    if (n < 0) {
        System.out.println(ftp.lastErrorText());
        return;
    }

    if (n > 0) {
        for (i = 0; i <= n - 1; i++) {

            //  Display the filename
            System.out.println(ftp.getFilename(i));

            //  Display the file size (in bytes)
            System.out.println(ftp.GetSize(i));

            //  Is this a sub-directory?
            if (ftp.GetIsDirectory(i) == true) {
                System.out.println(".. this is a sub-directory");
            }

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

    }

    System.out.println("-----------------------------------");

    //  Changing the ListPattern automatically changes the value
    //  of the NumFilesAndDirs property.  Only files and directories
    //  matching the ListPattern are returned.
    ftp.put_ListPattern("*.asp");
    n = (int) ftp.get_NumFilesAndDirs();
    if (n < 0) {
        System.out.println(ftp.lastErrorText());
        return;
    }

    if (n > 0) {
        for (i = 0; i <= n - 1; i++) {

            //  Display the filename
            System.out.println(ftp.getFilename(i));

            //  Display the file size (in bytes)
            System.out.println(ftp.GetSize(i));

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

    }

    ftp.Disconnect();
  }
}