问如何在ganymed-ssh2-build210.jar中禁用diffie-hellman-group1-sha1

EN

bin/
apache-sshd-1.6.0.tar.gz
ganymed-ssh2-build210.jar
ganymed-ssh2-build210-sources.jar
SshClientDemo.java
SshServerDemo.java

package sub.optimal;

import java.nio.file.Paths;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.sshd.common.NamedFactory;
import org.apache.sshd.common.kex.KeyExchange;
import org.apache.sshd.common.util.GenericUtils;
import org.apache.sshd.server.SshServer;
import org.apache.sshd.server.keyprovider.SimpleGeneratorHostKeyProvider;
import org.apache.sshd.server.scp.ScpCommandFactory;
import org.apache.sshd.server.shell.InteractiveProcessShellFactory;
import org.apache.sshd.server.shell.ProcessShellFactory;

public class SshServerDemo extends Thread {

    public static void main(String[] args) throws Exception {
        Logger.getGlobal().setLevel(Level.FINEST);
        SshServer sshd = SshServer.setUpDefaultServer();
        sshd.setPort(2222);
        sshd.setKeyPairProvider(
                new SimpleGeneratorHostKeyProvider(Paths.get("hostkey.ser"))
        );
        sshd.setShellFactory(InteractiveProcessShellFactory.INSTANCE);
        sshd.setCommandFactory(
                new ScpCommandFactory.Builder().withDelegate(
                        cmd -> new ProcessShellFactory(
                                GenericUtils.split(cmd, ' ')
                        ).create()
                ).build()
        );

        List<NamedFactory<KeyExchange>> keyExchangeFactories;
        keyExchangeFactories = sshd.getKeyExchangeFactories();
        keyExchangeFactories.removeIf(
                e -> !e.getName().equals("diffie-hellman-group1-sha1")
        );

        sshd.setKeyExchangeFactories(keyExchangeFactories);
        sshd.setPasswordAuthenticator(
                (username, password, session) -> username.equals(password)
        );

        sshd.start();
        Thread.sleep(Long.MAX_VALUE);
    }
}

package sub.optimal;

import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

public class SshClientDemo {

    public static void main(String[] args) throws Exception {
        Connection conn = new Connection("localhost", 2222);
        conn.connect();
        boolean isAuthenticated = conn.authenticateWithPassword("foo", "foo");
        Session sess = conn.openSession();
        System.out.println("session is authenticated: " + isAuthenticated);

        sess.execCommand("echo I'm there...");

        InputStream stdout = new StreamGobbler(sess.getStdout());
        BufferedReader br = new BufferedReader(new InputStreamReader(stdout));

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

        sess.close();
        conn.close();
    }
}