import java.io.File;
import java.util.Properties;
import java.util.Vector;

import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.ChannelSftp.LsEntry;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;

public class ConnectWithKey {

    public static void main(String[] args) throws Exception {

        if (args.length < 3) {
            throw new Exception("not enough arguments");
        }

        String serverUrl = args[0];
        String userName = args[1];
        String password = args[2];

        //File privateKeyFile = new File(args[2]);
//      String passphrase = null;
//
//      if (args.length > 3) {
//          passphrase = args[3];
//      }

        JSch jsch = new JSch();
        //jsch.addIdentity(privateKeyFile.getAbsolutePath(), passphrase);

        Properties config = new Properties();
        config.put("StrictHostKeyChecking", "no");
        config.put("compression.s2c", "zlib,none");
        config.put("compression.c2s", "zlib,none");

        Session session = jsch.getSession(userName, serverUrl);
        session.setConfig(config);
        session.setPort(2200);
        session.setPassword(password);
        session.connect();

        ChannelSftp channel = (ChannelSftp) session.openChannel("sftp");
        channel.connect();

        @SuppressWarnings("unchecked")
        final Vector<LsEntry> files = channel.ls(".");
        for (LsEntry obj : files) {
            System.out.println(obj.toString());
        }

        channel.disconnect();
        session.disconnect();
    }

}