Replacing a HashSet Java member

Question

I have Set of that structure. I do not have duplicates but when I call: set.add(element) -> and there is already exact element I would like the old to be replac

Answer 1

I was working on a problem where I had a set then I wanted to replace/override some of the objects with objects from another set.

In my case what I ended up doing was creating a new set and putting the overrides in first then adding the current objects second. This works because a set won't replace any existing objects when adding new objects.

If you have:

Set currentInfo;
Set overrides;

Instead of:

for each override, replace the object in current info

I did:

Set updated = new HashSet<>();
updated.addAll(overrides);
updated.addAll(currentInfo);