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#announcements
Title
# announcements
k

KayCee

09/18/2020, 3:52 AM
How can I add all 3 lists of object into one? Given the first and the third one can be empty? There ain't something like listA.addAll(listB).addAll(listC) 🤔
d

deactivateduser

09/18/2020, 3:55 AM
something like this maybe? https://pl.kotl.in/OWnRyCccA
k

KayCee

09/18/2020, 3:59 AM
ah great! 😆
n

Nir

09/18/2020, 4:03 AM
Err i don't understand the relationship between the question and answer
since the question is 3 lists
and the answer involves a map
but you can just do
listA + listB + listC
👏 1
k

KayCee

09/18/2020, 4:06 AM
just read a paper, there are 4 ways: plus operator, addAll, java stream 😋
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