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A connection to a URL for reading or writing. For HTTP connections, see
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This class contains various methods for manipulating arrays (such as sorting and
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HashMap is an implementation of Map. All optional operations are supported.All
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A counting semaphore. Conceptually, a semaphore maintains a set of permits. Each
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Patterns are compiled regular expressions. In many cases, convenience methods
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A point representing a location in (x,y) coordinate space, specified in integer
precision.
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