Sequential/reverse order to build a linked list (java)

Build a linked list sequentially

import java.util.Scanner;
class Node{
	int data;
	Node next;
	Node(){
		this.data = -1;
		this.next = null;
	}
	Node(int data){
		this.data = data;
		this.next = null;
	}
	boolean hasNext() {
		return this.next == null ? false : true;
	}
}
public class Main{
	public static void main(String []args) {
		Scanner cin = new Scanner(System.in);
	     Node head = null;
	     Node tail = null;
	     tail = head;
	     int n , i , v;
	     n = cin.nextInt ();
	     for(i = 0;i<n;i++) {
	    	 v = cin.nextInt ();
	    	 Node p = new Node(v);
	    	 if(head==null) {
	    		 head = p;
	    		 tail = p;
	    	 }
	    	 else {
	    		 tail.next = p;
	    		 tail = p;
	    	 }
	    	 
	     }
	     tail = head;
	     while(tail.hasNext()) {
	    	 System.out.print(tail.data + " ");
	    	 tail = tail.next;
	     }
	     System.out.println(tail.data);
		cin.close();
	}
}

Create a linked list in reverse order

import java.util.Scanner;
class Node{
	int data;
	Node next;
	Node(){
		this.data = -1;
		this.next = null;
	}
	Node(int data){
		this.data = data;
		this.next = null;
	}
	boolean hasNext() {
		return this.next == null ? false : true;
	}
}
public class Main{
	public static void main(String []args) {
		Scanner cin = new Scanner(System.in);
	     Node head = null;
	     Node tail = null;
	     tail = head;
	     int n , i , v;
	     n = cin.nextInt ();
	     for(i = 0;i<n;i++) {
	    	 v = cin.nextInt ();
	    	 Node p = new Node(v);
	    	 if(head==null) {
	    		 head = p;
	    		 tail = p;
	    	 }
	    	 else {
	    		 p.next = head;
	    		 head = p;
	    	 }
	    	 
	     }
	     tail = head;
	     while(tail.hasNext()) {
	    	 System.out.print(tail.data + " ");
	    	 tail = tail.next;
	     }
	     System.out.println(tail.data);
		cin.close();
	}
}