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Return the contained value, if present, otherwise throw an exception to be
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Provides a client-side TCP socket.
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A Java representation of the SQL TIMESTAMP type. It provides the capability of
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A plug-in replacement for JDK1.5 java.util.concurrent.ConcurrentHashMap. This
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A synchronization aid that allows one or more threads to wait until a set of
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Provides an abstract class to be subclassed to create an HTTP servlet suitable
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