generational garbage collector 比较完善 ; 垃圾回收器
A generational collector divides the heap into multiple generations.
分代收集器(generializational collector)将堆分为多个代。
A generational collector is free to use a different collection strategy for different generations and perform garbage collection on the generations separately.
分代收集器对不同的代可以自由使用不同的收集策略，对各代分别进行垃圾收集。
The generational collector employed by JDK 1.2 and later offers far better allocation and collection performance than the mark-sweep-compact collector used by earlier JDKs.
JD K 1.2及以后版本所使用的分代垃圾收集器提供了比早期JDK所使用的标记-清除-整理收集器好得多的分配和收集性能。
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