So I want to be able to sort this map into a TreeMap or LinkedHashmap by comparing by a value in the CustomObject i.e compare via object.getSomeValue().
So the object with the highest value will be obviously first in the LinkedHashmap
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What did you try already? What did your own research result in? StackOverflow is supposed to be a last resort when everything else fails, this is not a coding service.Ben– Ben2018-03-07 09:36:54 +00:00Commented Mar 7, 2018 at 9:36
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Welcome to Stack Overflow! Please take the tour, have a look around, and read through the help center, in particular How do I ask a good question? and What topics can I ask about here?. From that second link: "Questions asking for homework help must include a summary of the work you've done so far to solve the problem, and a description of the difficulty you are having solving it."Timothy Truckle– Timothy Truckle2018-03-07 09:37:16 +00:00Commented Mar 7, 2018 at 9:37
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you can write your own comparator for itVikas Suryawanshi– Vikas Suryawanshi2018-03-07 09:38:32 +00:00Commented Mar 7, 2018 at 9:38
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1 Answer
You can't do it in reasonable manner, but if you really want it what you can do is:
List<EntrySet<UUID, CustomObject>> list = new ArrayList<>(map.entrySet());
Collections.sort(list, (e1, e2) -> /*comparision here*/);
Map<UUID, CustomObject> sortedMap = new LinkedHashMap<>();
for(Entry<UUID, CustomObject> entry: list){
sortedMap.put(entry.getKey(), entry.getValue());
}
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