What will be the output of the following code?

public class Test $\{$

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

int x; $//$ x has no default value

String y; $//$ y has no default value

System.out.println$("$x is $"+$ x$)$;

System.out.println$("$y is $"+$ y$)$;

$\}$

$\}$