Creating a LinkedList class from scratch

Question

We were given an assignment to create a LinkedList from scratch, and there are absolutely no readings given to guide us on this migrane-causing task. Also everything online

Answer 1

Pleas find bellow Program

class Node {
    int data;
    Node next;

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

public class LinkedListManual {

    Node node;

    public void pushElement(int next_node) {
        Node nd = new Node(next_node);
        nd.next = node;
        node = nd;
    }

    public int getSize() {
        Node temp = node;
        int count = 0;
        while (temp != null) {
            count++;
            temp = temp.next;
        }
        return count;
    }

    public void getElement() {
        Node temp = node;
        while (temp != null) {
            System.out.println(temp.data);
            temp = temp.next;
        }
    }

    public static void main(String[] args) {
        LinkedListManual obj = new LinkedListManual();
        obj.pushElement(1);
        obj.pushElement(2);
        obj.pushElement(3);
        obj.getElement(); //get element
        System.out.println(obj.getSize());  //get size of link list
    }

}