Guava 23.5 已发布，Guava 是 Google 的一个开源项目，包含许多 Google 核心的 Java 常用库，如：集合 [collections] 、缓存 [caching] 、原生类型支持 [primitives support] 、并发库 [concurrency libraries] 、通用注解 [common annotations] 、字符串处理 [string processing] 、I/O 等等。 在新版中 ImmutableMap.getOrDefault 现已可以在 Android flavor 中使用。在 IO 方面，添加了Files.fileTraverser()和MoreFiles.fileTraverser()，并弃用了 Files.fileTreeTraverser()和MoreFiles.directoryTreeTraverser()。还包含以下更新内容： base: Graduated Verify and VerifyException from @Beta. (0ad9c44) collect: ImmutableMap.getOrDefault is now also available in the Android flavor. (1e4938c) graph: Tightened the contract for the edge-adding methods on Mutable{Graph, Network, ValueGraph}. This is a breaking change; implementors of these interfaces should verify that they still comply with this contract. (ec48806) io: Added Files.fileTraverser() and MoreFiles.fileTraverser(). (af7514a) io: Deprecated Files.fileTreeTraverser() and MoreFiles.directoryTreeTraverser(). (1644f6e) Migrated from jsr305's @Immutable to Error Prone's. (901e985) Added a dependency on, but did not begin using, the Checker Framework. Maven <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>23.5-jre</version> <!-- or, for Android: --> <version>23.5-android</version> </dependency> Javadoc 23.5-jre 23.5-android JDiff 23.5-jre vs. 23.4-jre 23.5-android vs. 23.4-android 23.5-android vs. 23.5-jre 下载地址：https://github.com/google/guava/releases/tag/v23.5 Guava 23.5 版本发布，Google 的 Java 核心库下载地址
