Java 8 – Filter a null value from a Stream
package com.mkyong.java8;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class Java8Examples {
public static void main(String[] args) {
Stream<String> language = Stream.of("java", "python", "node", null, "ruby", null, "php");
//List<String> result = language.collect(Collectors.toList());
List<String> result = language.filter(x -> x!=null).collect(Collectors.toList());
result.forEach(System.out::println);
}
}
output
java
python
node
ruby
php
Alternatively, filter with Objects::nonNull
import java.util.List;
List<String> result = language.filter(Objects::nonNull).collect(Collectors.toList());
http://www.mkyong.com/java8/java-8-filter-a-null-value-from-a-stream/