Please see the code below and fill in the gaps so that the given output is correctly generated.

public class Worksheet$4\_1\{$

counter $=0$;

int timer;

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

Worksheet$4\_1$ object$1=$ new Worksheet$4\_1()$;

object$1.$setCoutner$()$;

object$1.$setTimer$(10)$;

System.out.println$("$Counter $="++"\backslash$tTimer $="+$

Worksheet$4\_1$ object$2=$ new Worksheet$4\_1()$;

object$2.$ setCoutner$()$;

object$2.$ setTimer$(20)$;

System.out.println$("$Counter $="+$

$+$ ttTimer $=+$

object$2.$ resetCounter$()$:

$\}$

System.out.println$(]$

public Worksheet$4\_1()\{$

this. timer $=0$;

$\}$

Output:

public void setCoutner $()\{$

this. counter$++$;

$\}$

Counter $=1$ Timer $=10$

Counter $=2$ Timer $=20$

$0$

public void resetCounter$()\{$

this. counter $=0$;

$\}$

public void setTimer$($int second$)\{$

this.timer $=$ second;

$\}$

$\}$

object$2.$timer

static int

$[$

Worksheet$4\_1.$timer