Java How To Program, Late Objects, 11th Edition

...  displayStatistics(results1); 45         System.out.printf("Total time in milliseconds: %d%n%n",
46            Duration.between(sequentialStart, sequentialEnd).toMillis());
47
48         // time sum operation with parallel stream
49         LongStream stream2 = Arrays.stream(values).parallel();
50         System.out.println("Calculating statistics on parallel stream");
51         Instant parallelStart = Instant.now();                      
52         LongSummaryStatistics results2 = stream2.summaryStatistics();
53         Instant parallelEnd = Instant.now();                        
54
55         // display results
56         displayStatistics(results1);
57         System.out.printf("Total time in milliseconds: %d%n%n",
58            Duration.between(parallelStart, parallelEnd).toMillis());
59      }
60
61      // display's LongSummaryStatistics values
62      private static void displayStatistics(LongSummaryStatistics ...