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ObjectMapper provides functionality for reading and writing JSON, either to and
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An output stream that writes bytes to a file. If the output file exists, it can
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Provides access to system-related information and resources including standard
input and output. Ena
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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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Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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