How to sort my HashSet?

Question

class Sportsman {
private int SportsmanNumber;
private String SecondName;
private String ClubName;
private int FinishTime;
}
HashSet<Sportsman> set = new HashSet<Sportsman>();
How to sort by finish time?

Answer 1

Hashset is an unordered collection. Use an arraylist instead?

Answer 2

Then make your Sportsman class implement the comparable interface.
Override the compareto method.
https://www.javatpoint.com/Comparable-interface-in-collection-framework