In the following code, which lines have code that does not adhere to the Java coding standard?

$1$ public class myProgram $\{$

$2$ public static void main$($String$[]$ args$)\{$

$3$

$4//$Declare variables

$5$ int age $=20$;

$6$ double ageInDogYears $=140$;

$7$

$8//$Print out age and age in dog years.

$9$ System.out.print$("$I am $"+$ age $+$ "years old."$)$;

$10$ System.out.print$("$In dog years, I would be $"+$ ageInDogYears $)$;

$11$ System.out.print$("$ years old."$)$;

$12\}$

$13\}$