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Return the contained value, if present, otherwise throw an exception to be
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This class represents a server-side socket that waits for incoming client
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Uses a one-way hash function to turn an arbitrary number of bytes into a
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A specific moment in time, with millisecond precision. Values typically come
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ResourceBundle is an abstract class which is the superclass of classes which
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Patterns are compiled regular expressions. In many cases, convenience methods
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