الإضافة و الطباعة في linked List

السلام عليكم

هذا البرنامج الذي كتبته يعطيني مخرجات خاطئة :

package first;

public class ALwaleedFamaly {
	private String name;
	private int phoneNumber;

	public ALwaleedFamaly()
	{
		name=null;
		phoneNumber=0;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getPhoneNumber() {
		return phoneNumber;
	}

	public void setPhoneNumber(int phoneNumber) {
		this.phoneNumber = phoneNumber;
	}
	public void print(){
		System.out.println("name :"+name);
		System.out.println("phone Number :"+phoneNumber);


	}


}

package first;

public class Node {
	private ALwaleedFamaly data;
	private Node Next;

	public Node()
	{
		data=null;
		Next=null;
	}
	public Node(ALwaleedFamaly Nod)
	{
		data=Nod;
		Next=null;
	}
	public Node(ALwaleedFamaly No, Node nex)
	{
		this.data=No;
		this.Next=nex;
	}
	public ALwaleedFamaly getdata() {
		return data;
	}
	public void setData(ALwaleedFamaly node) {
		data = node;
	}
	public Node getNext() {
		return Next;
	}
	public void setNext(Node next) {
		Next = next;
	}




}

package first;

public class List {
	private Node head;
	private Node tail;

	public List()
	{
		head=null;
		tail=null;
	}
	public boolean isEmpty()
	{
		return head==null;
	}
	public void insterAtFirst(ALwaleedFamaly Obj)
	{
		Node No=new Node(Obj,head);
		No.setNext(head);
		if(isEmpty())
		{
			head=tail=No;
		}
		else
		{
			head=No;


		}



	}
	public void display()
	{
		Node current=head;

		while(current !=null)
		{
			current.getdata().print();
			current=current.getNext();

		}
	}

}

package first;

import java.util.Scanner;
public class MainFirstClass {
	public static void main(String[]args)
	{
		Scanner input=new Scanner(System.in);
		Node Nod=new Node();
		List Lis=new List();
		ALwaleedFamaly Alwaleed=new ALwaleedFamaly();
		int exit;

		do{
			System.out.println("Enter");
			exit=input.nextInt();

			switch(exit)
			{
			case 1:
				System.out.println("Enter name");
				String n=input.next();
				Alwaleed.setName(n);
				System.out.println("Enter phone number");
				int phone=input.nextInt();
				Alwaleed.setPhoneNumber(phone);
				Nod.setData(Alwaleed);
				Lis.insterAtFirst(Alwaleed);
				break;
			case 2:
				Lis.display();
			}
		}while(exit!=0);
	}

}

المخرجااااات

Enter 1_ inset  2- print
1
Enter name
a
Enter phone number
2
Enter 1_ inset  2- print
1
Enter name
b
Enter phone number
3
Enter 1_ inset  2- print
2
name :b
phone Number :3
name :b
phone Number :3
Enter 1_ inset  2- print
0

لاحظوا الخطا في المخرجات تتكر النتيجة

أين الخطأ الأن هل هو في الاضافة أم في الطباعة ؟!