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Signals a general, I/O-related error. Error details may be specified when
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A concrete subclass of NumberFormat that formats decimal numbers. It has a
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GregorianCalendar is a concrete subclass of Calendarand provides the standard
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A synchronization aid that allows one or more threads to wait until a set of
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Operations on java.lang.String that arenull safe.
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Central representation of an Ant project. This class defines an Ant project with
all of its targets,
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