Java – Get List of Files from FTP Server

import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.io.FileUtils;
import java.io.IOException;

public class Main {
public static void main(String[] args) {
FTPClient client = new FTPClient();

client.connect("ftp.domain.com");
client.login("admin", "secret");

String[] names = client.listNames();
for (String name : names) {
System.out.println("Name = " + name);
}

FTPFile[] ftpFiles = client.listFiles();
for (FTPFile ftpFile : ftpFiles) {
// Check if FTPFile is a regular file
if (ftpFile.getType() == FTPFile.FILE_TYPE) {
System.out.println("FTPFile: " + ftpFile.getName() + "; "
+ FileUtils.byteCountToDisplaySize(ftpFile.getSize()));
}
}
client.logout();
client.disconnect();
}
}

Java – Upload File to FTP Server

import org.apache.commons.net.ftp.FTPClient;
import java.io.FileInputStream;
import java.io.IOException;

public class Main {
public static void main(String[] args) {
FTPClient client = new FTPClient();
FileInputStream fis = null;

client.connect("ftp.domain.com");
client.login("admin", "secret");

String filename = "Touch.dat";
fis = new FileInputStream(filename);
client.storeFile(filename, fis);
client.logout();
fis.close();
}
}

Java – Connect to FTP Server

import org.apache.commons.net.ftp.FTPClient;
import java.io.IOException;

public class FtpConnectDemo {
public static void main(String[] args) {
FTPClient client = new FTPClient();

client.connect("ftp.domain.com");
boolean login = client.login("admin", "secret");

if (login) {
System.out.println("Login success...");
boolean logout = client.logout();
if (logout) {
System.out.println("Logout from FTP server...");
}
} else {
System.out.println("Login fail...");
}
client.disconnect();
}
}