What output will be produced by the following code?

public class Demo
{
public static void main(String[] args)
{
System.out.println("The output is:");
foo(23);
System.out.println();
}
public static void foo(int number)
{
if (number > 0)
{
foo(number / 2);
System.out.print(number % 2);
}
}
}