Reading Content From FTP File?

I am trying to read a content of file downloaded from ftp and return it as a String. This is what I use:

Java Code:

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.net.ftp.FTPClient;
public class Test {
public static void main(String [] args) throws IOException{
FTPClient ftp = new FTPClient();

[code]....

The code does not work, although all the links are correct.