how do we access Java collection APIs like `Queue`...

# multiplatform

[Alberto]

how do we access Java collection APIs like Queue in Kotlin Multiplatform?

[ephemient]

you can't

[Alberto]

So for collections like a Queue, what would be the alternative to use in KMP?

[ilya.gorbunov]

ArrayDeque: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-array-deque/

[ephemient]

java.util.Queue is not quite the same as kotlin.collections.ArrayQueue: the former has non-blocking offer/poll methods

[ephemient]

if you're not using that, only the blocking methods of an unbounded java.util.ArrayDeque, then sure, kotlin.collections.ArrayQueue can give you the same functionality

[CLOVIS]

If you want to use a Queue to send objects across threads (blocking queue of requests), the multiplatform equivalent would be KotlinX coroutines' Channel

[ilya.gorbunov]

@ephemient In what sense offer/poll are non-blocking? Queue.offer method docs only mention the behavior regarding capacity-restricted queues. For unbounded queues offer should be equivalent to add.
And for poll there's a direct equivalent in `ArrayDeque`: removeFirstOrNull