if (args.length != 3) { System.err.println("Usage:java Tester [server-uri] [method] [args]");
if (args.length != 4) { System.err.println("Usage:java Tester [server-uri] [username] [method] [args]");
    public static void main(String[] args) {		try {		    if (args.length != 3) {				System.err.println("Usage:java Tester [server-uri] [method] [args]");				System.exit(1);			}	    	siena = new ThinClient(args[0]);	    	//this is the call	    	publishC_getRoom(args[1], args[2]);	    	System.out.println("shutting down.");	   		siena.shutdown();	    	//Thread.sleep(1000);	    	//System.exit(0);		} catch (Exception ex) {	    	ex.printStackTrace();	    	System.exit(1);		}	}