These files are containing the class com.google.common.util.concurrent

Guava Concurrency Libraries are an expanded set of services and types supporting advanced concurrent programming in Java.

guava-bursty-rate-limiter

guava-bursty-rate-limiter

Contains Guava's com.google.common.util.concurrent.ListenableFuture class, without any of its other classes -- but is also available in a second "version" that omits the class to avoid conflicts with the copy in Guava itself. The idea is: - If users want only ListenableFuture, they depend on listenablefuture-1.0. - If users want all of Guava, they depend on guava, which, as of Guava 27.0, depends on listenablefuture-9999.0-empty-to-avoid-conflict-with-guava. The 9999.0-... version number is enough for some build systems (notably, Gradle) to select that empty artifact over the "real" listenablefuture-1.0 -- avoiding a conflict with the copy of ListenableFuture in guava itself. If users are using an older version of Guava or a build system other than Gradle, they may see class conflicts. If so, they can solve them by manually excluding the listenablefuture artifact or manually forcing their build systems to use 9999.0-....

Durian - Guava's spikier (unofficial) cousin

Contains com.google.common.util.concurrent.internal.InternalFutureFailureAccess and InternalFutures. Most users will never need to use this artifact. Its classes are conceptually a part of Guava, but they're in this separate artifact so that Android libraries can use them without pulling in all of Guava (just as they can use ListenableFuture by depending on the listenablefuture artifact).

Contains com.google.common.util.concurrent.internal.InternalFutureFailureAccess and InternalFutures. Most users will never need to use this artifact. Its classes is conceptually a part of Guava, but they're in this separate artifact so that Android libraries can use them without pulling in all of Guava (just as they can use ListenableFuture by depending on the listenablefuture artifact).

Contains com.google.common.util.concurrent.internal.InternalFutureFailureAccess and InternalFutures. Most users will never need to use this artifact. Its classes is conceptually a part of Guava, but they're in this separate artifact so that Android libraries can use them without pulling in all of Guava (just as they can use ListenableFuture by depending on the listenablefuture artifact).

to make guava v20 be compatible for some removed apis

A Java architecture test library, to specify and assert architecture rules in plain Java - Module 'archunit-junit'