// streams/Matching.java

// (c)2017 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

// Demonstrates short-circuiting of *Match() operations

import java.util.stream.*;

import java.util.function.*;

import static streams.RandInts.*;

interface Matcher extends

BiPredicate<Stream<Integer>, Predicate<Integer>> {}

public class Matching {

static void show(Matcher match, int val) {

System.out.println(

match.test(

IntStream.rangeClosed(1, 9)

.boxed()

.peek(n -> System.out.format("%d ", n)),

n -> n < val));

}

public static void main(String[] args) {

show(Stream::allMatch, 10);

show(Stream::allMatch, 4);

show(Stream::anyMatch, 2);

show(Stream::anyMatch, 0);

show(Stream::noneMatch, 5);

show(Stream::noneMatch, 0);

}

}

/* Output:

1 2 3 4 5 6 7 8 9 true

1 2 3 4 false

1 true

1 2 3 4 5 6 7 8 9 false

1 false

1 2 3 4 5 6 7 8 9 true

*/