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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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ResourceBundle is an abstract class which is the superclass of classes which
provide Locale-specifi
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A map that has its keys ordered. The sorting is according to either the natural
ordering of its keys
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A synchronization aid that allows one or more threads to wait until a set of
operations being perfor
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Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
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General IO stream manipulation utilities. This class provides static utility
methods for input/outpu
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