Java Stream filter null values example

Java ArrayList Examples

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• Java ArrayBlockingQueue Example
• Java Convert Array to Set
• Copying part of Array in Java Example
• Sorting an Array using Arrays.sort() Method
• Check Two Arrays are Deeply Equal
• Java Arrays.copyOf() Example - Copying an Array
• Java Arrays.binarySearch() Example - Searching an Array
• Java Arrays.asList() Example - Convert Array to ArrayList
• Java Convert Array to Stack Example
• What's the Simplest Way to Print a Java Array?
• Java Pyramid Examples
• How to Check if Two Arrays are Equal in Java
• Create and Initialize Two Dimensional Array in Java
• How to Initialize an Array in Java in One Line
• Java Array - Create, Declare, Initialize and Print Examples
• Java Array Simple Program

Array Methods with Examples

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• Java ArrayList add() Method
• Java ArrayList addAll() Method
• Java ArrayList clear() Method
• Java ArrayList contains() Method
• Java ArrayList ensureCapacity() Method
• Java ArrayList clone() Method
• Java ArrayList get() Method
• Java ArrayList indexOf() Method
• Java ArrayList remove() Method
• Java ArrayList removeAll() Method
• Java ArrayList removeIf() Method
• Java ArrayList retainAll() Method
• Java ArrayList sort() Method
• Java ArrayList spliterator() Method

The Java example filters out null values.

Java Stream filter null values example

We have a list of words. With the Stream filtering operation, we create a new list with null values removed.

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

public class JavaStreamFilterRemoveNulls {

    public static void main(String[] args) {

        List<String> words = Arrays.asList("cup", null, "forest",
                "sky", "book", null, "theatre");

        List<String> result = words.stream().filter(w -> w != null)
                .collect(Collectors.toList());

        System.out.println(result);
    }
}

Output:

[cup, forest, sky, book, theatre]