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A connection represents a link from a Java application to a database. All SQL
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This class provides methods that return pseudo-random values.It is dangerous to
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TreeSet is an implementation of SortedSet. All optional operations (adding and
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Patterns are compiled regular expressions. In many cases, convenience methods
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Operations on java.lang.String that arenull safe.
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This is the main interface of a Quartz Scheduler. A Scheduler maintains a registry of org.quartz.Job
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