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GregorianCalendar is a concrete subclass of Calendarand provides the standard
calendar used by most
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A plug-in replacement for JDK1.5 java.util.concurrent.ConcurrentHashMap. This
version is based on or
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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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Provides an abstract class to be subclassed to create an HTTP servlet suitable
for a Web site. A sub
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Operations on java.lang.String that arenull safe.
* IsEmpty/IsBlank - checks if a String contains
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