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Return the contained value, if present, otherwise throw an exception to be
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A BufferedInputStream adds functionality to another input stream-namely, the
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An output stream that writes bytes to a file. If the output file exists, it can
be replaced or appen
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Formats or parses dates and times.This class provides factories for obtaining
instances configured f
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This class contains various methods for manipulating arrays (such as sorting and
searching). This cl
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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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