import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;

public class StdoutAndStderr
{
    public static void main(String[] args)
    {
        String hostname = "127.0.0.1";
        String username = "joe";
        String password = "joespass";

        try
        {
            /* Create a connection instance */

            Connection conn = new Connection(hostname);

            /* Now connect */

            conn.connect();

            /* Authenticate */

            boolean isAuthenticated = conn.authenticateWithPassword(username, password);

            if (isAuthenticated == false)
                throw new IOException("Authentication failed.");

            /* Create a session */

            Session sess = conn.openSession();

            sess.execCommand("echo \"Text on STDOUT\"; echo \"Text on STDERR\" >&2");

            InputStream stdout = new StreamGobbler(sess.getStdout());
            InputStream stderr = new StreamGobbler(sess.getStderr());

            BufferedReader stdoutReader = new BufferedReader(new InputStreamReader(stdout));
            BufferedReader stderrReader = new BufferedReader(new InputStreamReader(stderr));

            System.out.println("Here is the output from stdout:");

            while (true)
            {
                String line = stdoutReader.readLine();
                if (line == null)
                    break;
                System.out.println(line);
            }

            System.out.println("Here is the output from stderr:");

            while (true)
            {
                String line = stderrReader.readLine();
                if (line == null)
                    break;
                System.out.println(line);
            }

            /* Close this session */

            sess.close();

            /* Close the connection */

            conn.close();

        }
        catch (IOException e)
        {
            e.printStackTrace(System.err);
            System.exit(2);
        }
    }
}