public class Node { public int data; public Node next; public Node(int data) { this.data = data; this.next = null; } }
package org.example; public class Node { public int key; public int value; public Node left, right; public Node(int key, int value) { this.key = key; this.value = value; this.left = this.right = null; } }In this example, the Node class represents a binary search tree node that contains an integer key and value data fields and references to the left and right child nodes. The size of the integer key and value data fields is 8 bytes in total. This implementation could be found in a package/library for tree data structures.