import org.apache.commons.net.ftp.FTPClient;
import java.io.IOException;
import java.io.FileOutputStream;
public class Main {
public static void main(String[] args) {
FTPClient client = new FTPClient();
FileOutputStream fos = null;
client.connect("ftp.domain.com");
client.login("admin", "secret");
String filename = "sitemap.xml";
fos = new FileOutputStream(filename);
client.retrieveFile("/" + filename, fos);
fos.close();
client.disconnect();
}
}