(Number Format Exception)Write the bin2Dec(String binary String) method to convert a binary string into a decimal number. Implement the bin2Dec method to throw a Number Format Exception if the string...

(Number Format Exception)Write the bin2Dec(String binary String) method to convert a binary string into a decimal number. Implement the bin2Dec method to throw a Number Format Exception if the string is not a binary string. Write a test program that prompts the user to enter a binary number as a string and displays decimal equivalent of the string. If the method throws an exception, display "Not a binary number".

Sample Run 1

Enter a binary number: 101

5

Sample Run 2

Enter a binary number: 41

Not a binary number: 41