public static void main(String[] args) {
		
		//Scanner scan = new Scanner(System.in); 
		//System.out.println("Enter Non Negetive Number: ");
		//int number = scan.nextInt();
		
		System.out.println(xmethod(5));
		
		
	}
	public static int xmethod(int number) {
		if(number==1)
			return 1;
		else
			return number + xmethod(number-1);
	}
}

//OUTPUT: 15
1+2+3+4+5 =  15