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HashSet is an implementation of a Set. All optional operations (adding and
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A plug-in replacement for JDK1.5 java.util.Hashtable. This version is based on
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A plug-in replacement for JDK1.5 java.util.concurrent.ConcurrentHashMap. This
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Provides an abstract class to be subclassed to create an HTTP servlet suitable
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A Rectangle specifies an area in a coordinate space that is enclosed by the
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