public class FTPManager
{

    private static FTPManager ftpManager;


    private FTPManager(){}

    public static FTPManager getInstance()
    {
          if(ftpManager!=null)
          {
              return ftpManager; 
          }
           else
           {      ftpManager= new FTPManager ();
                   return ftpManager;
            }
    }


    public static void main(String[] args) throws Exception
    {
        FTPConnector ftpConnector = new FTPConnector("ftp server url", "username", "password");
        FTPClient ftpClient = ftpConnector.getFTPConnection();
        FTPManager ftpManager= FTPManager.getInstance();
        directoryManager.scanDirectoryTree(ftpClient);
    }

    private  void scanDirectoryTree(FTPClient ftpClient) throws IOException
    {
        FTPFile[] ftpFiles = ftpClient.listFiles();
        System.out.println("Files inside FTP Base");
        for (FTPFile ftpFile : ftpFiles)
        {
            if (ftpFile.isFile())
            {
                System.out.println("File Name :" +ftpFile.getName());               
            }
        }
        System.out.println("Directories and Subdirectories inside FTP Base");
        for (FTPFile ftpFile : ftpFiles)
        {
             if (ftpFile.isDirectory())
            {
                String dirName=ftpFile.getName();
                System.out.println("Directory Name :"+dirName);
                scanDirectoryTree(ftpClient, dirName);
            }
        }
    }

    private static void scanDirectoryTree(FTPClient ftpClient,String directory) throws IOException
    {   

       FTPFile[] ftpFiles =ftpClient.listFiles(directory);

        if (ftpFiles.length == 0) {
            System.out.println("no files in " + directory);
        }
        else
        {
            System.out.println("Files and sub directories inside the directory :"+directory);
        }
        for (FTPFile ftpFile : ftpFiles)
        {
            if (ftpFile.isFile())
            {
                System.out.println("File Name :"+directory+"\\" + ftpFile.getName());   
            }
        }
        for (FTPFile ftpFile : ftpFiles)
        {
            if (ftpFile.isDirectory())
            {
                String dirName=directory+"\\"+ftpFile.getName();
                scanDirectoryTree(ftpClient, dirName);
            }
        }

    }

}

Hi Soni,

This will list out the files,directories and sub directories inside ftp.You can utilize this code for your reference.