fetchItemToDisplay.java

List<String> fetchItemToDisplay(List<List<String>> items, int sortParameter, int sortOrder, int itemsPerPage, int pageNumber) {
        List<String> output = new ArrayList<>();
        Collections.sort(items, (a, b) -> {
            if (sortOrder == 0) {
                return sortParameter != 0 ?
                        Integer.parseInt(a.get(sortParameter))  - Integer.parseInt(b.get(sortParameter)) :
                        a.get(sortParameter).compareTo(b.get(sortParameter));
            } else {
                return  sortParameter != 0 ?
                        Integer.parseInt(b.get(sortParameter))  - Integer.parseInt(a.get(sortParameter)) :
                        b.get(sortParameter).compareTo(a.get(sortParameter));
            }
        });
        int sum = itemsPerPage * pageNumber;
        if (sum >= items.size()) {
            return output;
        }
        for (int i = sum; i <items.size() && i < sum + itemsPerPage; i++) {
            List<String> temp = items.get(i);
            output.add(temp.get(0));
        }
        return output;
    }