Upload/Download files on FTP server Java

Below is sample code for FTP connection and upload/download file from server.

package sample;

import java.io.InputStream;
import java.io.OutputStream;

import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;

public class PropertyFTP {

    String server = "127.0.0.1";// FTP server IP/Name
    int port = 21;// Default FTP port
    String user = "ftpuser"; //Username of your FTP account
    String pass = "ftppass";// FTP Password

FTPClient ftpClient = null;

FTP ftp = null;

public PropertyFTP(){
ftpClient = new FTPClient();
ftp = new FTP();
}

public void conncetFtp(){
try {
ftpClient.connect(server, port);
ftpClient.login(user, pass);
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
} catch (Exception e) {
e.printStackTrace();
}
}

public void setDirectory(String dir){
try {
ftpClient.changeWorkingDirectory("/"+dir);
} catch (Exception e) {
e.printStackTrace();
}
}

public void disconnetFtp(){
try {
ftpClient.logout();
ftpClient.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
}

public void uploadFile(String fileName, InputStream inputStream){
try {
ftpClient.storeFile(fileName, inputStream);
} catch (Exception e) {
e.printStackTrace();
}
}

public void downloadFile(String filename,OutputStream out){
try{
ftpClient.retrieveFile(filename, out);
}catch(Exception e){
e.printStackTrace();
}
}

}