This topic is about Java 11 – Not Predicate.
Java 11 introduced new method to Predicate interface as not() to negate an existing predicate similar to negate method.
Consider the following example −
ApiTester.java
import java.util.Arrays;
import java.util.List;
import java.util.function.Predicate;
import java.util.stream.Collectors;
public class APITester {
public static void main(String[] args) {
List<String> tutorialsList = Arrays.asList("Java", "\n", "HTML", " ");
List<String> tutorials = tutorialsList.stream()
.filter(Predicate.not(String::isBlank))
.collect(Collectors.toList());
tutorials.forEach(tutorial -> System.out.println(tutorial));
}
}
Output
Java HTML
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