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HashSet is an implementation of a Set. All optional operations (adding and
removing) are supported.
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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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A TimeUnit represents time durations at a given unit of granularity and provides
utility methods to
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The GridLayout class is a layout manager that lays out a container's components
in a rectangular gri
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The BufferedImage subclass describes an java.awt.Image with an accessible buffer
of image data. All
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