Program to throw the HexFormatException exception Program plan: Import the required packages into the program. Create a class Exercise12_08 to throw the HexFormatException exception. In the main() method, Call hex2Dec() method to convert the hexadecimal to decimal value by passing the hexa value. In hexa2Dec() method, Declare variable. The for Loop executes until the length of hexadecimal value. If yes, Convert the hexadecimal value to decimal value Return the converted value. In convertHexToDec() method, Check whether the character is "A". If yes, Return the value 10. Check whether the character is "B". If yes, Return the value 11. Check whether the character is "C". If yes, Return the value 12. Check whether the character is "D". If yes, Return the value 13. Check whether the character is "E". If yes, Return the value 14. Check whether the character is "F". If yes, Return the value 15. Check whether the character between “9” and “0”. If yes, Return the value. Otherwise, throw an exception. Create a class HexFormatException to throw the HexFormatException exception.

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Chapter 12, Problem 12.8PE

Program Plan Intro

Program to throw the HexFormatException exception

Program plan:

Import the required packages into the program.

Create a class Exercise12_08 to throw the HexFormatException exception.

In the main() method,

Call hex2Dec() method to convert the hexadecimal to decimal value by passing the hexa value.

In hexa2Dec() method,

Declare variable.

The for Loop executes until the length of hexadecimal value. If yes,

Convert the hexadecimal value to decimal value

Return the converted value.

In convertHexToDec() method,

Check whether the character is "A". If yes,

Return the value 10.

Check whether the character is "B". If yes,

Return the value 11.

Check whether the character is "C". If yes,

Return the value 12.

Check whether the character is "D". If yes,

Return the value 13.

Check whether the character is "E". If yes,

Return the value 14.

Check whether the character is "F". If yes,

Return the value 15.

Check whether the character between “9” and “0”. If yes,

Return the value.

Otherwise, throw an exception.

Create a class HexFormatException to throw the HexFormatException exception.

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