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A connection to a URL for reading or writing. For HTTP connections, see
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A concrete subclass of NumberFormat that formats decimal numbers. It has a
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An iterator over a sequence of objects, such as a collection.If a collection has
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Stack is a Last-In/First-Out(LIFO) data structure which represents a stack of
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Walk the nodes of the tree left-to-right or right-to-left. Note that in
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A Rectangle specifies an area in a coordinate space that is enclosed by the
Rectangle object's top-
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