Java11 - Not 谓词

Java11 向 Predicate 接口引入了新方法 not() 来否定现有谓词，类似于 negate 方法。

考虑以下示例 −

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));
   }
}

输出

Java
HTML