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An output stream that writes bytes to a file. If the output file exists, it can
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Represents a command that can be executed. Often used to run code in a different
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Collection is the root of the collection hierarchy. It defines operations on
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HashMap is an implementation of Map. All optional operations are supported.All
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HashSet is an implementation of a Set. All optional operations (adding and
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The LoggerFactory is a utility class producing Loggers for various logging APIs,
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