java.lang.NoSuchMethodError: java.util.List.sort(Ljava/util/Comparator;)V

[timmolter]

Please ensure you have given all the following requested information in your report.

Issue details

Getting a NoSuchMethodError for a Java8+ Streaming call: List.sort(Object::compareTo). I could update the library code to Collections.sort(list, comparator), but it would be very time consuming and a non-desirable approach. Is there something I'm missing here with using RoboVM?

java.lang.NoSuchMethodError: java.util.List.sort(Ljava/util/Comparator;)V
at com.hedera.hashgraph.sdk.Network.getNodeAccountIdsForExecute(Network.java:89)

Hedera project code line reference here:
https://github.com/hashgraph/hedera-sdk-java/blob/c6dc4a0e9fb3f28297abfbefa17f2d02996f7b3d/sdk/src/main/java/com/hedera/hashgraph/sdk/Network.java#L89

Versions:

Please provide the version of RoboVM, XCode and JDK used

• Robovm: 2.3.12
• XCode: 12.3
• JDK: 8

[dkimitsa]

@timmolter current RoboVM runtime doesn't support Java8 APIs like streams. Its compatible with Android 4.4 one.

[timmolter]

@dkimitsa Thanks for the quick answer!

"Its compatible with Android 4.4 one." - What do you mean by this exactly?

Does RoboVM plan to support Java8 APIs anytime soon?

[MobiDevelop]

The Java API supported is that of Android 4.4 - which is, generally, Java 7 APIs.

[dkimitsa]

@timmolter
this issue is duplicate of #514, #259

Does RoboVM plan to support Java8 APIs anytime soon?

there is work in progress that brings Android10 Java runtime, which is Java8+ API #527

[davidgiga1993]

Would it be possible to have a compile time error for this? I mostly notice these issues after release since I can't test every platform each time.

[obigu]

Yo can set your project source level to 6 or 7 on your build tool.

…

On Sat, 13 Feb 2021 at 11:46, David ***@***.***> wrote: Would it be possible to have a compile time error for this? I mostly notice these issues after release since I can't test every platform each time. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#555 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AANWDPBVV6KQV7PKYW66HITS6ZKAHANCNFSM4WTHYASQ> .

[dkimitsa]

@obigu its a problem when third party dependency using such api

[davidgiga1993]

@obigu No because some java 8 features are working fine and I heavily use them (for example lambdas for event listeners)
If I change the build level to 7 I can't use those anymore.

[timmolter]

I ended up changing the lib's code to Java 7 API: hashgraph/hedera-sdk-java#451