Cracked/legit launcher for Minecraft!

Introduction

I present to you, once again, yet another Minecraft launcher! This launcher differs from other launchers out there; I've taken good points out of them, added some of my own and came up with something I am proud to almost call a masterpiece!

As some of you may have known, I started a thread once on this which got deleted (due to issues and security concerns with Dave84311 and the launcher's login protocol). So now, issues resolved and with me taking a 2-day break on a vacation, I have optimised *some* code, and added support for downloading older Minecraft versions!

Features

1) Downloading different versions of minecraft.jar! - From "Classic 0.30" to the latest preleases (1.9 pr 5), we got them covered!
2) Running different versions of minecraft.jar! - Tired of always having to switch /bin directories, or running a script? This one's for you!
3) Minecraft RAM allocation! - A major help for those with x64 systems, or more than 1GB of RAM to speed up your playing experience!
4) Support for Minecraft legit/cracked, and SpoutCraft! - Don't enter a password to play cracked, and do to play legit!
5) Notifies you on Minecraft/SpoutCraft updates! - This gives you the ability to be notified of Minecraft updates... even if you are a non-premium user! Same goes with SpoutCraft.
6) Minecraft and SpoutCraft update options - Just click "Force Update" in the Options menu

My brother is (hopefully) working on a web-interface that allows you to upload your mods to the Internet and download the modded version of minecraft.jar. I may, though, in the future, add mod-support directly to the launcher.

Virus Scans

VirusTotal
Jotti's malware scan

Once again, false positives T_T"
@arunforce, decompile?

Screenshots


The launcher itself


Username selection box


JAR Downloader!


Main Launcher screen with JAR Selection


Launcher Options...


Game Updater screen

Changelog

0.0.0.4:
Fixed the 'null' error.