2016-03-15 85 views

回答

5

当前它返回java.util.concurrent.ConcurrentHashMap

+2

请参阅[Maps.java:304](https://github.com/google/guava/blob/a2a2ebb9aa29a5d24182f394125121129f936155/guava/src/com/google/common/collect/Maps.java#L304)和[MapMaker。的java:520](https://github.com/google/guava/blob/master/guava/src/com/google/common/collect/MapMaker.java#L520)。 – mfulton26

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