Constructor type mismatch in java

I'm self-learning linked list in java and I was writing a basic program. I'm getting errors related to constructors that I cannot understand. Here is my code:

import java.util.*;

public class prac{

public class Linked{
    
    public void display(Node head)
    {
        if(head==null) // list is empty
        {
            return ;
        }
        Node current=head;
        while(current!=null)
        {   System.out.print(current.data+ " --> ");
            current=current.next;
        }
        System.out.println(current);
    }
    private class Node{
        int data;
        Node next;
        public Node(int data)
        {
            this.data=data;
            this.next=null;
        }
    }
}
public static void main(String[] args)
{
    Node head=new Node(10);
    Node second=new Node(11);
    Node third=new Node(5);
    Node fourth=new Node(1);
    head.next=second;
    second.next=third;
    third.next=fourth;
    Linked linklist=new Linked();
    linklist.display(head);
}
}

Some of the errors are this:
error: constructor Node in class Node cannot be applied to given types;
    Node fourth=new Node(1);
                ^
  required: no arguments
  found: int
  reason: actual and formal argument lists differ in length
error: non-static variable this cannot be referenced from a static context
    Linked linklist=new Linked();
                    ^
prac.java:40: error: incompatible types: Node cannot be converted to prac.Linked.Node
    linklist.display(head);

Can anyone please explain how to solve this error and the reason behind it? I'm stuck here.
/

If you have an inner class and you have a variable type as same, then that will take priority

  Node current=head;

this refers to the private inner class

In your main method

 Node head=new Node(10)

this refers to a different class

To solve this issue, one option, change the inner class name, other option create a constructor and copy all the values to that object

private class Node{
    int data;
    Node next;
    public Node(mypackage.Node node) {
        this.data = node.data;
        this.next = node.next;
    }

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

Then change you display function as

Node current=new Node(head);

In this code mypackage is assumed to be your own package or a third party library

You are not able to access the Nodeclass from higher scope because it is private to the Linked class. Only within the linked class can you actually create a Node object due to it's access restriction.

In my solution, I initially split the classes, so Linked is no longer inside the Prac class. Otherwise all of your methods would have to be naturally static due to Prac having the main method

public static void main(String[] args).

Additionally, I chose to keep the Node constructor private, but expose an addNode(int value) method publicly which you can call.

The solution is here to help.