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Signals a general, I/O-related error. Error details may be specified when
calling the constructor, a
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An immutable arbitrary-precision signed decimal.A value is represented by an
arbitrary-precision "un
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HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
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This class provides methods that return pseudo-random values.It is dangerous to
seed Random with the
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TimeZone represents a time zone offset, and also figures out daylight savings.
Typically, you get a
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Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
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