为什么printLL()函数中的头节点没有改变?

class Node { 
    int data;
    Node next;

    Node(int value) {
        this.data = value;
        this.next = null;
    }
}

class LL {
    Node head;

    void createLL() {
        head = new Node(10);
        head.next = new Node(20);
        head.next.next = new Node(30);
        head.next.next.next = new Node(40);
    }

    void printLL() {
        Node node = head;
        System.out.println("Printing full Linked List");

        while (node != null) {
            System.out.println(node.data);
            node = node.next;
        }
        System.out.println("Value of head is " + head.data);
        if (head.equals(node)) {
            System.out.println("head and node both are same");
        }

        else {
            System.out.println("head and node are not same");`
        }

    }
}



// Output - 

// Printing full Linked List
// 10
// 20
// 30
// 40
// Value of head is 10
// head and node are not same