OnJava8-Examples/functional/PredicateComposition.java
2016-12-30 17:23:13 -08:00

24 lines
643 B
Java

// functional/PredicateComposition.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.
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
*/