can someone point me to some information on callin...

# coroutines

[james]

can someone point me to some information on calling a suspend fun from a java class with Java 7 compatibility? I found some information by googling on how to do this with Java 8+, but not Java 7

[gildor]

Why do you need this?

[gildor]

In theory it’s possible, but it’s very-very unpleasant to use, and may make sense only for some interop library

[gildor]

Java 8 version also shouldn’t be different from Java 7 (maybe except lambdas)

[james]

CompletableFuture seems to be the way to do it, and it's an Android (pre-API 24) project, so CompletableFuture doesn't exist

[streetsofboston]

Yeah... You'd have to write your own Java-compatible shim/adapter around your API's suspend funs, using Rx or plain callbacks or other mechanisms.

[gildor]

Yes, if you just want to provide way to use coroutines from Java, use any Java library

[gildor]

RxJava, CompletableFuture, ListenableFuture (a part of guava), you can write even own abstraction, if you want and easily write adapter for it

[Dico]

You can call it with reflection if you add the continuation parameter and implement the logic for the return value.

[Dico]

I don't think suspend function names are mangled but based on the answers in the thread I guess you can't just call it normally with the continuation 🤔
Maybe it's difficult to work with the Result type from java as well.