如何使用Java列出SFTP服务器中的所有文件？

import com.jcraft.jsch.*;

import java.util.Vector;

public class SFTPExample {
    public static void main(String[] args) {
        String host = "sftp.example.com";
        int port = 22;
        String username = "your-username";
        String password = "your-password";

        try {
            JSch jsch = new JSch();
            Session session = jsch.getSession(username, host, port);
            session.setPassword(password);
            session.setConfig("StrictHostKeyChecking", "no");
            session.connect();

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

            ChannelSftp sftpChannel = (ChannelSftp) channel;
            Vector<ChannelSftp.LsEntry> files = sftpChannel.ls(".");
            for (ChannelSftp.LsEntry file : files) {
                System.out.println(file.getFilename());
            }

            sftpChannel.disconnect();
            session.disconnect();
        } catch (JSchException | SftpException e) {
            e.printStackTrace();
        }
    }
}