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A BufferedInputStream adds functionality to another input stream-namely, the
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A specialized Writer that writes to a file in the file system. All write
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An interface for an object which represents a database table entry, returned as
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HashMap is an implementation of Map. All optional operations are supported.All
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A PriorityQueue holds elements on a priority heap, which orders the elements
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A Set is a data structure which does not allow duplicate elements.
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