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Return the contained value, if present, otherwise throw an exception to be
created by the provided s
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A ConnectException is thrown if a connection cannot be established to a remote
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Provides a client-side TCP socket.
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This class generates cryptographically secure pseudo-random numbers. It is best
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Factory and utility methods for Executor, ExecutorService,
ScheduledExecutorService, ThreadFactory,
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An interface for the creation of Connection objects which represent a connection
to a database. This
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The GridBagLayout class is a flexible layout manager that aligns components
vertically and horizonta
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