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This class generates cryptographically secure pseudo-random numbers. It is best
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A legacy iteration interface.New code should use Iterator instead. Iterator
replaces the enumeration
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A java.util.Queue that additionally supports operations that wait for the queue
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General IO stream manipulation utilities. This class provides static utility
methods for input/outpu
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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