$1$ public class Q$1$NumberThing

$2\{$

$3/*************************************************************$

$4*$ Sums all numbers in the list greater than y$.*$

$5*$ Divides the total by the magnitude of the list. $*$

$6*$ If anything is invalid, $-1\mathrm{.}0$ is returned instead. $*$

$7**************************************************************/$

$8$ public static double numberThing$($List intList, int y$)$

$9\{$

$10$ if $($intList $==$ null$)$

$11$ return $-1\mathrm{.}0$;

$12$ else

$13\{$

$14$ double sum $=0\mathrm{.}0$;

$15$ for$($Integer nextInt: intList$)$

$16\{$

$17$ if$($nextInt $>$ y$)$

$18$ sum $=$ sum $+($double$)$nextInt;

$19\}$

$20$

$21$ if$($sum $==0)$

$22$ return $-1\mathrm{.}0$;

$23$

$24$ double result $=$ sum $/($double$)$intList$.$size$()$;

$25$ return result;

$26\}$

$27\}$

$28$

$29$ public static void main$($String$[]$ args$)$

$30\{$

$31$ double result $=$ numberThing$(/*$parameters go here$*/)$;

$32$ System.out.println$($result$)$;

$33\}$

$34\}$

Explain what is wrong with the given code. Describe the fault precisely by proposing a modification

If possible, give a test case that does not execute the fault. If not, briefly explain

why not.

If possible, give a test case that executes the fault, but does not result in an error

state. If not, briefly explain why not.

If possible give a test case that results in an error, but not a failure. If not, briefly

explain why not.

e$)$ In the given code, describe the first error state. Be sure to describe the complete

state.