Write a recursive method that parses a hex number as a string into a decimal integer.

The method header is:

public static int hex$2$Dec$($String hexString$)$

Write a demo program that prompts the user to enter :

a hex string &

displays it decimal equivalent.

$($Recall: A$16=1010,$ b$16=1110,...$a$16=4910)$

Use the following hex values to convert:

BAD, BAC$98,$ BabA$73$