Write a while loop that prints all powers of $2$ that are less than a given number $n.$ For example, if $n$ is $100,$ print $1,2,4,8,16,32,64.$

import java.util.Scanner;

public class Powers$0$fTwo

$\{$

public static void main$($String$[]$ args$)$

$\{$

Scanner in $=$ new Scanner$($

System.in$)$;

System.out.print$("n$ : $")$;

int $n=$ in$.$ nextInt$()$;