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Uses a one-way hash function to turn an arbitrary number of bytes into a
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A specific moment in time, with millisecond precision. Values typically come
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This class provides methods that return pseudo-random values.It is dangerous to
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A parser that parses a text string of primitive types and strings with the help
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Factory and utility methods for Executor, ExecutorService,
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A reentrant mutual exclusion Lock with the same basic behavior and semantics as
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