public void process() throws ParseException {
        if (commandLine.hasOption('s')) {
            processStartCase();
        }
        if (commandLine.hasOption('e')) {
            processEndCase();
        }
        if (commandLine.hasOption('l')) {
            processListCase();
        }
        if (commandLine.hasOption('u')) {
            processUpdateCase();
        }
        if (commandLine.hasOption('r')) {
            processRemmoveCase();
        }
        if (commandLine.hasOption('a')) {
            processAddEarlierCase();
        }
    }