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Wraps an existing Writer and buffers the output. Expensive interaction with the
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A writable sink for bytes.Most clients will use output streams that write data
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A controller for the selection of SelectableChannel objects. Selectable channels
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A concrete subclass of NumberFormat that formats decimal numbers. It has a
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A Map is a data structure consisting of a set of keys and values in which each
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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