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Return the contained value, if present, otherwise throw an exception to be
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A specialized Writer that writes to a file in the file system. All write
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A concrete subclass of NumberFormat that formats decimal numbers. It has a
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ArrayList is an implementation of List, backed by an array. All optional
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Patterns are compiled regular expressions. In many cases, convenience methods
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A Window object is a top-level window with no borders and no menubar. The
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