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A connection to a URL for reading or writing. For HTTP connections, see
HttpURLConnection for docume
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An iterator over a sequence of objects, such as a collection.If a collection has
been changed since
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Factory and utility methods for Executor, ExecutorService,
ScheduledExecutorService, ThreadFactory,
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
#acquire blocks if
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Factory for creating Log instances, with discovery and configuration features
similar to that employ
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A Java virtual machine.
A VirtualMachine represents a Java virtual machine to which this Java vir
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