Static Nested Class

It is a common practice to nest the Node class inside the LinkedList class:

public class LinkedList<T> {
  private Node<T> head;
  
  private static class Node<E> {
    E data;
    Node<E> next;
  }
  
  // we can have constructors, methods to add/remove nodes, etc.
}

Note the nested class is declared as static.

On the other hand, the outer class has access to the instance members of the static nested class objects. The Node does not need access to the members of LinkedList, but LinkedList can access data and next on objects of Node, eliminating the need for getters/setters.