private static void usage() {
		System.out.println("Runs either a client, tracker or creates " +
				"a torrent metainfo file depending on arguments.\n");
		System.out.println("Usage:" + 
				"java -jar ttorrent<version>.jar <client|tracker" +
				"|create> <arguments>");
		System.out.println("\tclient\t-\tstart the client");
		System.out.println("\ttracker\t-\tstart the tracker");
		System.out.println("\ttorrent\t-\tcreate a torrent metainfo file");
		System.out.println("\targuments\t-\tadditional arguments passed " +
				"to mainclass used.");
	}