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- orElseThrow (Optional)
Return the contained value, if present, otherwise throw an exception to be
created by the provided s
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ObjectMapper provides functionality for reading and writing JSON, either to and
from basic POJOs (Pl
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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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Allows reading from and writing to a file in a random-access manner. This is
different from the uni-
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A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
- SQLException (java.sql)
An exception that indicates a failed JDBC operation. It provides the following
information about pro
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General IO stream manipulation utilities. This class provides static utility
methods for input/outpu
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