Node.java

package spliterators.part4.data;

import java.util.Objects;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;

public class Node<T> {
    private final T value;
    private Node<T> left;
    private Node<T> right;

    public Node(T value, Node<T> left, Node<T> right) {
        this.value = Objects.requireNonNull(value);
        this.left = left;
        this.right = right;
    }

    public T getValue() {
        return value;
    }

    public Node<T> getLeft() {
        return left;
    }

    public Node<T> getRight() {
        return right;
    }

    public Stream<T> stream(boolean isParallel) {
        return StreamSupport.stream(new NodeSpliterator<>(this), isParallel);
    }

    public void setNullChild(final Node<T> node) {
        if (right == null) {
            right = node;
        } else {
            left = node;
        }
    }
}