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Signals a general, I/O-related error. Error details may be specified when
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An Internet Protocol (IP) address. This can be either an IPv4 address or an IPv6
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Calendar is an abstract base class for converting between a Date object and a
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An object that executes submitted Runnable tasks. This interface provides a way
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This is the central class in the log4j package. Most logging operations, except
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A generic Abstract Window Toolkit(AWT) container object is a component that can
contain other AWT co
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