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An Internet Protocol (IP) address. This can be either an IPv4 address or an IPv6
address, and in pra
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Thrown when a hostname can not be resolved.
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A Properties object is a Hashtable where the keys and values must be Strings.
Each property can have
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A TimeUnit represents time durations at a given unit of granularity and provides
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This is the central class in the log4j package. Most logging operations, except
configuration, are d
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