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Allows reading from and writing to a file in a random-access manner. This is
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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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A Map is a data structure consisting of a set of keys and values in which each
key is mapped to a si
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A task that returns a result and may throw an exception. Implementors define a
single method with no
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Factory and utility methods for Executor, ExecutorService,
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