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This class generates cryptographically secure pseudo-random numbers. It is best
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Java representation of an SQL TIME value. Provides utilities to format and parse
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A parser that parses a text string of primitive types and strings with the help
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A TimeUnit represents time durations at a given unit of granularity and provides
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Patterns are compiled regular expressions. In many cases, convenience methods
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This is the central class in the log4j package. Most logging operations, except
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