Java: How do I sort multiple ArrayList by their size?

Question

I have 9 different ArrayList and I want to have a list of the top 5.

I\'m thinking of sorting those ArrayLists by their sizes.

Is it

Answer 1

you can do like this as well

public static  List> sort(List> list) {
        list.sort((xs1, xs2) -> xs1.size() - xs2.size());
        return list;
    }