(NumberFormatException) Programming Exercise 9.8 specifies the binaryToDecimal(String bi...

(NumberFormatException) Programming Exercise 9.8 specifies the binaryToDecimal(String binaryString) method, which converts a binary string into a decimal number. Implement the binaryToDecimal method to throw a NumberFormatException if the string is not a binary string.

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(Binary to decimal ) Write a method that parses a binary number as a string into a decimal integer. The method header is:

public static int binaryToDecimal(String binaryString)

For example, binary string 10001 is parses a binary string to a decimal value. Do not use this method in this exercise. Write a test program that prompts the user to enter a binary string and displays the corresponding decimal integer value.