class Box $\{$ int width, height; Box$($int w$,$ int h$)\{$ width $=$ w; height $=$ h; $\}\}$ public class Test $\{$ public static void main$($String$[]$ args$)\{$ Box box$1=$ new Box$(10,20)$; Box box$2=$ box$1$; box$2.$width $=30$; System.out.println$("$Width of box$1$: $"+$ box$1.$width$)$; $\}\}$

Question $18$ options:

Runtime error

Width of box$1$: $30$

Compile$-$time error

Width of box$1$: $10$