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A specific moment in time, with millisecond precision. Values typically come
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Doubly-linked list implementation of the List and Dequeinterfaces. Implements
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Stack is a Last-In/First-Out(LIFO) data structure which represents a stack of
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A synchronization aid that allows one or more threads to wait until a set of
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
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