Need to do a Map>>

Asked Mar 30 '18 at 01:47

Active Mar 30 '18 at 02:01

Viewed 51 times

I have a list of objects of a class that have a LocalDate attribute I need to make a Map that has the key being the year and the value another map that the key is the month and the value the list of that object Like this:

Map<Integer, Map<Month, List<K>>>

Does anyone have any ideas?

edited Mar 30 '18 at 02:01

shmosel

45,768
6
62
130

asked Mar 30 '18 at 01:47

V.Junior

Loop your list and put it in the map – Marcos Vasconcelos Mar 30 '18 at 02:04
Got plenty of ideas. You won't be interested in them, since they have nothing to do with whatever you're asking about, since I can't tell what that is. – davidbak Mar 30 '18 at 02:04
2

`list.stream().collect(Collectors.groupingBy(o -> o.getDate().getYear(), Collectors.groupingBy(o -> o.getDate().getMonth())))` – shmosel Mar 30 '18 at 02:04
shmosel, its work! Thank – V.Junior Mar 31 '18 at 02:56

Need to do a Map>>

0 Answers0