OnJava8-Examples/functional/PredicateComposition.java at master · CSapprenticeWT/OnJava8-Examples · GitHub

Repository navigation

// functional/PredicateComposition.java

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

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

import java.util.function.*;

import java.util.stream.*;

public class PredicateComposition {

static Predicate<String>

p1 = s -> s.contains("bar"),

p2 = s -> s.length() < 5,

p3 = s -> s.contains("foo"),

p4 = p1.negate().and(p2).or(p3);

public static void main(String[] args) {

Stream.of("bar", "foobar", "foobaz", "fongopuckey")

.filter(p4)

.forEach(System.out::println);

}

/* Output:

foobar

foobaz