Fork-Join Parallelism

Example: Parallel Array Sum

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This example primarily deals with using Java's ForkJoin framework. There is an alternative approach that works well for some situations and this is to use parallel streams. Here is an example:

		List<Integer> iList = Arrays.asList(arr);
		start = timingClock.millis();
		int sum2 = iList.parallelStream().reduce(0, (x, y) -> x + y);
		end = timingClock.millis();
		System.out.println("Parallel streams took us " + (end - start) + "ms");