public static void main()

in commons-vfs2-examples/src/main/java/org/apache/commons/vfs2/libcheck/FtpCheck.java [40:89]
45 lines of code
10 McCabe index (conditional complexity)

    public static void main(final String[] args) throws Exception {
        if (args.length < 3) {
            throw new IllegalArgumentException("Usage: FtpCheck user pass host dir");
        }
        final String user = args[0];
        final String pass = args[1];
        final String host = args[2];
        String dir = null;
        if (args.length == 4) {
            dir = args[3];
        }

        final FTPClient client = new FTPClient();
        client.connect(host);
        final int reply = client.getReplyCode();
        if (!FTPReply.isPositiveCompletion(reply)) {
            throw new IllegalArgumentException("cant connect: " + reply);
        }
        if (!client.login(user, pass)) {
            throw new IllegalArgumentException("login failed");
        }
        client.enterLocalPassiveMode();

        final OutputStream os = client.storeFileStream(dir + "/test.txt");
        if (os == null) {
            throw new IllegalStateException(client.getReplyString());
        }
        os.write("test".getBytes(Charset.defaultCharset()));
        os.close();
        client.completePendingCommand();

        if (dir != null && !client.changeWorkingDirectory(dir)) {
            throw new IllegalArgumentException("change dir to '" + dir + "' failed");
        }

        System.err.println("System: " + client.getSystemType());

        final FTPFile[] files = client.listFiles();
        for (int i = 0; i < files.length; i++) {
            final FTPFile file = files[i];
            if (file == null) {
                System.err.println("#" + i + ": " + null);
            } else {
                System.err.println("#" + i + ": " + file.getRawListing());
                System.err.println("#" + i + ": " + file);
                System.err.println("\t name:" + file.getName() + " type:" + file.getType());
            }
        }
        client.disconnect();
    }