February 2014
Beginner
1248 pages
62h 25m
English
Content preview from Java™ How To Program (Early Objects), Tenth Edition
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Section 17.6.6 Counting the Number of Employees in Each Department
• Collectors static method groupingBy with two arguments receives a Function that classifies the objects in the stream and another Collector (known as the downstream Collector; p. 756).
• Collectors static method counting returns a Collector that counts the number of objects in a given classification, rather than collecting them into a List.
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