Get timeline using twitter4j in C# (via IKVM)

twitter4ikvm.cs

using java.awt;
using java.io;
using java.lang;
using java.net;
using java.util;
using twitter4j;
using twitter4j.auth;

using System.Collections.Generic;


namespace t4ikvm
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            var file = new File("twitter4j.properties");
            var prop = new Properties();
            InputStream inputStream = null;
            OutputStream outputStream = null;
            try
            {
                if (file.exists())
                {
                    inputStream = new FileInputStream(file);
                    prop.load(inputStream);
                }
                if (args.Length < 2)
                {
                    if (null == prop.getProperty("oauth.consumerKey")
                        && null == prop.getProperty("oauth.consumerSecret"))
                    {
                        // consumer key/secret are not set in twitter4j.properties

                        System.Console.WriteLine(
                            "Usage: java twitter4j.examples.oauth.GetAccessToken [consumer key] [consumer secret]");
                        System.Environment.Exit(-1);
                    }
                }
                else
                {
                    prop.setProperty("oauth.consumerKey", args[0]);
                    prop.setProperty("oauth.consumerSecret", args[1]);
                    outputStream = new FileOutputStream("twitter4j.properties");
                    prop.store(outputStream, "twitter4j.properties");
                }
            }
            catch (IOException ioe)
            {
                ioe.printStackTrace();
                System.Environment.Exit(-1);
            }
            finally
            {
                if (inputStream != null)
                {
                    try
                    {
                        inputStream.close();
                    }
                    catch (IOException ignore)
                    {
                    }
                }
                if (outputStream != null)
                {
                    try
                    {
                        outputStream.close();
                    }
                    catch (IOException ignore)
                    {
                    }
                }
            }
            try
            {
                Twitter twitter = new TwitterFactory().getInstance();
                RequestToken requestToken = twitter.getOAuthRequestToken();
                System.Console.WriteLine("Got request token.");
                System.Console.WriteLine("Request token: " + requestToken.getToken());
                System.Console.WriteLine("Request token secret: " + requestToken.getTokenSecret());
                AccessToken accessToken = null;

                BufferedReader br = new BufferedReader(new InputStreamReader(java.lang.System.@in));
                while (null == accessToken)
                {
                    System.Console.WriteLine("Open the following URL and grant access to your account:");
                    System.Console.WriteLine(requestToken.getAuthorizationURL());
                    try
                    {
                        Desktop.getDesktop().browse(new URI(requestToken.getAuthorizationURL()));
                    }
                    catch (UnsupportedOperationException ignore)
                    {
                    }
                    catch (IOException ignore)
                    {
                    }
                    catch (URISyntaxException e)
                    {
                        throw new AssertionError(e);
                    }
                    System.Console.WriteLine("Enter the PIN(if available) and hit enter after you granted access.[PIN]:");
                    var pin = br.readLine();
                    try
                    {
                        if (pin.Length > 0)
                        {
                            accessToken = twitter.getOAuthAccessToken(requestToken, pin);
                        }
                        else
                        {
                            accessToken = twitter.getOAuthAccessToken(requestToken);
                        }
                    }
                    catch (TwitterException te)
                    {
                        if (401 == te.getStatusCode())
                        {
                            System.Console.WriteLine("Unable to get the access token.");
                        }
                        else
                        {
                            te.printStackTrace();
                        }
                    }
                }
                System.Console.WriteLine("Got access token.");
                System.Console.WriteLine("Access token: " + accessToken.getToken());
                System.Console.WriteLine("Access token secret: " + accessToken.getTokenSecret());

                try
                {
                    prop.setProperty("oauth.accessToken", accessToken.getToken());
                    prop.setProperty("oauth.accessTokenSecret", accessToken.getTokenSecret());
                    outputStream = new FileOutputStream(file);
                    prop.store(outputStream, "twitter4j.properties");
                    outputStream.close();
                }
                catch (IOException ioe)
                {
                    ioe.printStackTrace();
                    System.Environment.Exit(-1);
                }
                finally
                {
                    if (outputStream != null)
                    {
                        try
                        {
                            outputStream.close();
                        }
                        catch (IOException ignore)
                        {
                        }
                    }
                }
                System.Console.WriteLine("Successfully stored access token to " + file.getAbsolutePath() + ".");

                try
                {
                    var user = twitter.verifyCredentials();
                    var statuses = twitter.getHomeTimeline().ToEnumerable<Status>();
                    System.Console.WriteLine("Showing @" + user.getScreenName() + "'s home timeline.");
                    foreach (var status in statuses)
                    {
                        System.Console.WriteLine("@" + status.getUser().getScreenName() + " - " + status.getText());
                    }
                }
                catch (TwitterException te)
                {
                    te.printStackTrace();
                    System.Console.WriteLine("Failed to get timeline: " + te.getMessage());
                    System.Environment.Exit(-1);
                }

                System.Environment.Exit(0);
            }
            catch (TwitterException te)
            {
                te.printStackTrace();
                System.Console.WriteLine("Failed to get accessToken: " + te.getMessage());
                System.Environment.Exit(-1);
            }
            catch (IOException ioe)
            {
                ioe.printStackTrace();
                System.Console.WriteLine("Failed to read the system input.");
                System.Environment.Exit(-1);
            }
        }
    }

    public static class JavaListExtention
    {
        public static IEnumerable<T> ToEnumerable<T>(this java.util.List jList)
        {
            var iterator = jList.iterator();

            while (iterator.hasNext())
            {
                yield return (T)iterator.next();
            }
        }
    }
}