查看“︁Java LongAdder”︁的源代码


LongAdder跟AtomicLong功能类似，但是在高竞争的场景下表现更优。例如结合ConcurrentHashMap来维护一个频率列表：

<syntaxhighlight lang="java">
ConcurrentHashMap<String,LongAdder> freqs; //...
freqs.computeIfAbsent(key, k -> new LongAdder()).increment();}
</syntaxhighlight>


[[Category:Concurrency]]