在java8中筛选布尔值

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class BooleanFilterExample {
    public static void main(String[] args) {
        List<Boolean> booleanList = Arrays.asList(true, false, true, true, false);

        List<Boolean> trueList = booleanList.stream()
                                           .filter(b -> b)
                                           .collect(Collectors.toList());

        System.out.println(trueList); // 输出: [true, true, true]
    }
}

if (booleanList != null) {
    List<Boolean> trueList = booleanList.stream()
                                       .filter(b -> b != null && b)
                                       .collect(Collectors.toList());
}

booleanList.parallelStream()
          .filter(b -> b)
          .forEachOrdered(System.out::println);