class Driver $\{$

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

int $a\frac{?}{b}=ar(3)$;

int $b=f(a)$;

$\}$

System.out.print$($b$)$;

static int foo$($int a$)\{$

$a=-1$

$\}$

return $a$;

static int bar$($int a$)\{$

System, out $.$ print$($a$)$;

$\}$

return $a+2$

$\}$