null pointer exception occurs.

import java.util.Random;
import java.util.Scanner;
  
public class Dice {
	static Random ranNum = new Random();
	static int output ;
	public Dice(){
		output = ranNum.nextInt(6) + 1;
	}
	public int OutPut(){
		return(output);
	}
	
}

public class Player {
	
	private int position;
	Dice roll = new Dice();
	boolean cont;
	
	public Player(){
		this.position = 0;
	}
	public void Move(){
		if( (position + roll.OutPut()) >= 100){
			position = 100;
			cont = true;
		}
		else{
			position += roll.OutPut();
			cont = false;
		}
	}
	public boolean Cont(){
		return(cont);
	}
}

public class GamePlay {
	
	Player[] person;
	int takeTurn;
	
	public GamePlay(int numPl){
		this.person = new Player[numPl];
		takeTurn = 0;
	}
	public void Turn(){
		do{
		person[takeTurn].Move();
		if(takeTurn == (person.length-1))
			takeTurn = 0;
		else
			takeTurn += 1;
		}while(person[takeTurn].Cont() == true);
		System.out.printf("Player %f Wins",(takeTurn + 1));
	}
	public static void main(String[] args){
		Scanner scan = new Scanner(System.in);
		GamePlay newGame = new GamePlay(scan.nextInt());
		newGame.Turn();
	}
	 
}