private static String[] initializeHostNames() {
        String[] hostNames = new String[4];
        hostNames[0] = "pi.cs.oswego.edu";
        hostNames[1] = "rho.cs.oswego.edu";
        hostNames[2] = "wolf.cs.oswego.edu";
        hostNames[3] = "lambda.cs.oswego.edu";
        return hostNames;
    }