java 带有 Guava 集合的线程安全 HashSet
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Thread-safe HashSet with Guava Collections
提问by santiagobasulto
Like the title says, i would like to get a thread-safe HashSet using Guava Collections.
Are any available?
正如标题所说，我想使用 Guava Collections 获得线程安全的 HashSet。
有没有可用的？
采纳答案by santiagobasulto
This would be the right answer, Using the Sets class from Guava. Anyway the answer from @crhis was good intended.
这将是正确的答案，使用 Guava 的 Sets 类。无论如何，@crhis 的回答是好的。
Sets.newSetFromMap(new ConcurrentHashMap<V, Boolean>());
回答by Chris Jester-Young
Set<K> set = Collections.newSetFromMap(new ConcurrentHashMap<K, Boolean>());
回答by turbanoff
Java 8 introduces new way to create concurrent hash set - ConcurrentHashMap.newKeySet()
Java 8 引入了创建并发散列集的新方法 - ConcurrentHashMap.newKeySet()
Set<K> set = ConcurrentHashMap.newKeySet();
It's shorter than wrapping in Collections.newSetFromMap
它比包装短 Collections.newSetFromMap
回答by Etienne Neveu
Google Collections hada factory method named Sets.newConcurrentHashSet()for a while.
Google Collections有一个名为Sets.newConcurrentHashSet()的工厂方法有一段时间了。
Its implementation was similar to Chris's suggestion:
它的实现类似于 Chris 的建议：
public static <E> Set<E> newConcurrentHashSet() {
return newSetFromMap(new ConcurrentHashMap<E, Boolean>());
}
They had a newSetFromMap()method inside the com.google.common.collect.Setsclass (written by Doug Lea with assistance from members of JCP JSR-166). That method was added to java.util.Collectionsin java 1.6.
他们在com.google.common.collect.Sets类（由 Doug Lea 在 JCP JSR-166 成员的帮助下编写）中有一个newSetFromMap()方法。该方法在 java 1.6 中被添加到java.util.Collections中。
It was withdrawn in Google Collections 1.0rc1, since there are plans to better support concurrent sets in Guava (more information here).
它在 Google Collections 1.0rc1 中被撤回，因为有计划更好地支持 Guava 中的并发集（更多信息在这里）。
This postexpands on the use of the "newSetFromMap" method to construct concurrent sets.
这篇文章扩展了使用“newSetFromMap”方法来构造并发集。
