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Sybex OCP Java 8 Study Guide, Chapter 4, p. 217, error in table 4.11  RSS feed

 
Greenhorn
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The return value of the mapping collector is not 'Collector' but the arbitrary type 'R'.
 
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It's actually neither. It's a collector with three generic types in the JavaDoc. We chose to just write Collector to avoid over complicating this.

 
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