How do you fix this code snippet to make it print out the sum? The user will continue entering floating point numbers. If the user enters a string value the loop will terminate.$$

import java.util.Scanner;

public class Mystery $\{$

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

System.out.print$("$Enter a value: $")$;

double sum $=0$;

Scanner in $=$ new Scanner$($System$.$in$)$;

do

$\{$

double value $=$ in$.$nextDouble$()$;

sum $=$ sum $+$ value;

System.out.print$("$Enter a value to add, or a letter to quit: $")$;

$\}$

while $(/*$ what code goes here? $*/)$;

System.out.println$("$sum $"+$ sum$)$;

return;

$\}$

$\}$

Group of answer choices

in$.$hasData$()$

in$.$hasNextDouble$()$

$!$in$.$hasEnded$()$