mirror of https://github.com/grpc/grpc-java.git
a81bf14f1f
This change can have large impact from two aspects: 1. It calls out a _large_ impact on the _few_ Java 7 users. 2. It may have _small_ impact on the _many_ Android users. https://github.com/grpc/grpc-java/issues/4671 tracks gRPC's removal of Java 7 support. We are quite eager to drop Java 7 support as that would allow using new language features like default methods. Guava is also dropping Java 7 support and starting in 30.1 it will warn when used on Java 7. The purpose of the warning is to help discover users that are negatively impacted by dropping Java 7 before it becomes a bigger problem. The Guava logging check was implemented in such a way that there is an optional class that uses Java 8 bytecode. While the class is optional at runtime, the Android build system notices when dexing and fails if Java 8 language featutres are not enabled. We believe this will not be a problem for most Android users, but they may need to add to their build: ``` android { compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } } ``` See also https://github.com/google/guava/releases/tag/v30.1 |
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