private static void printUsage(Command command) {
        if (command == Command.UNKNOWN) {
            StringBuilder sb = new StringBuilder();
            sb.append("Usage: StaffUtill <command> <arguments> ")
                .append("\n")
                .append("command:           arguments :")
                .append("\n")
                .append("ADDEMPL            filename")
                .append("\n")
                .append("ADDDESCR           \"description\"")
                .append("\n")
                .append("DELEMPL            employee id")
                .append("\n")
                .append("CHANGETYPE         employee id, type(other, manager, worker)")
                .append("\n")
                .append("ADDTOMANAGER       employee id, manager id")
                .append("\n")
                .append("SORTBYSURNAME")
                .append("\n")
                .append("SORTBYHIRINGDATE")
                .append("\n")
                .append("IMPORT");
            System.out.println(sb);
        } else if (command == Command.ADDEMPL) {
            System.out.println("Usage:  StaffUtill ADDEMPL filename");
        } else if (command == Command.ADDDESCR) {
            System.out.println("Usage:  StaffUtill ADDDESCR \"description\"");
        } else if (command == Command.DELEMPL) {
            System.out.println("Usage:  StaffUtill DELEMPL employee id");
        } else if (command == Command.CHANGETYPE) {
            System.out.println("Usage:  StaffUtill CHANGETYPE employee id, type(other, manager, worker)");
        } else if (command == Command.ADDTOMANAGER) {
            System.out.println("Usage:  StaffUtill ADDTOMANAGER employee id, manager id");
        }
    }