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An input stream that reads bytes from a file.
File file = ...finally
if (in != null)
in.clos
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An output stream that writes bytes to a file. If the output file exists, it can
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A concrete subclass of NumberFormat that formats decimal numbers. It has a
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A specific moment in time, with millisecond precision. Values typically come
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HashSet is an implementation of a Set. All optional operations (adding and
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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