Help me to understand this program

Question

https://code.sololearn.com/cRv2z10GxnKJ/?ref=app

Answer 1

Hi Sindhuja Selvakumar do not depend on the sololearn course alone for all explanations since these topics are not covered here.

I would suggest you to go through some websites for a little advanced learning. The below thread will be useful.

https://www.sololearn.com/discuss/580291/?ref=app

Now coming back to your question.
IntStream is an interface and you have initialized a reference variable stream which holds the value range from 1 to 2 because 3 is not included. It is somewhat similar to a for loop.

In the next line you are using a forEach loop to print these values using the :: (method reference).
So 1 and 2 are printed as output.

Answer 2

Thanks