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An exception that indicates a failed JDBC operation. It provides the following
information about pro
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A specific moment in time, with millisecond precision. Values typically come
from System#currentTime
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A Set is a data structure which does not allow duplicate elements.
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A reentrant mutual exclusion Lock with the same basic behavior and semantics as
the implicit monitor
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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A Rectangle specifies an area in a coordinate space that is enclosed by the
Rectangle object's top-
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