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ArrayList is an implementation of List, backed by an array. All optional
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The BitSet class implements abit array [http://en.wikipedia.org/wiki/Bit_array].
Each element is eit
- HashMap (java.util)
HashMap is an implementation of Map. All optional operations are supported.All
elements are permitte
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A PriorityQueue holds elements on a priority heap, which orders the elements
according to their natu
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Factory and utility methods for Executor, ExecutorService,
ScheduledExecutorService, ThreadFactory,
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