Observable.just() is a hot observable and not cold observable as mentioned in the doc.

[Ansh1234]

`fun main() { Observable.just(returnInt()) }

fun returnInt() : Int { println("inside return block") return 2; }`

Even without subscribing to the Observable.just(), it prints the statement, which means it is a hot observable and not a cold observable.

[rkeazor]

Observable.just is a cold observable, because the data is produced inside the observable and closed.