How to find duplicate elements in a given integers list in java using Stream functions?

How to find duplicate elements in a given integers list in java using Stream functions?
java 8 features
Java 8 stream api interview program
stream api in java 8.
Java 8 learn in hindi
learn java in hindi.
java 8 coding interview questions for 5 years experience.
java 8 interview questions
method reference in java 8
java 8 stream api
#unusualtechie #hindi

[sandeepkumarsahoo]

try this

ArrayList<Integer> list = new ArrayList();


list.stream().filter(x -> Collections.frequency(list, x) > -> System.out.println(x));

You dont need to declare an extra set.

[vikramsinghyadav]

I don't get the use of stream as I know even hashset itself can ignore duplicates the what role stream is playing here

[vinaykumardiona]

Collect it as set and compare size. If size is not same then duplicates are present.

[shubhamthakur]

Set will not allowed to store the duplicate element in it