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Provides access to system-related information and resources including standard
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HashSet is an implementation of a Set. All optional operations (adding and
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This class provides methods that return pseudo-random values.It is dangerous to
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A map that has its keys ordered. The sorting is according to either the natural
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Stack is a Last-In/First-Out(LIFO) data structure which represents a stack of
objects. It enables u
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A reentrant mutual exclusion Lock with the same basic behavior and semantics as
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