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Last active December 15, 2015 11:59
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Java 8 :: Snippet 1 :: Compute product of even numbers (streams, lambda expressions, type inference, filters, reducers and optional type)
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java8_snippet1.java
// Compute product of even numbers
OptionalInt r = Streams.intRange(1, 11) // [1..10]
.filter(n -> n % 2 == 0)
.reduce((acc, n) -> acc * n);
out.println(r.isPresent() ? r.getAsInt() : 1);
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