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A thread is a thread of execution in a program. The Java Virtual Machine allows
an application to ha
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A connection represents a link from a Java application to a database. All SQL
statements and results
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Calendar is an abstract base class for converting between a Date object and a
set of integer fields
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Collection is the root of the collection hierarchy. It defines operations on
data collections and t
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A Set is a data structure which does not allow duplicate elements.
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An ExecutorService that executes each submitted task using one of possibly
several pooled threads, n
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