Question: JAVA Create a custom exception called HexFormatException. Create a function that converts a hex string to a decimal number. Implement the method to throw a

JAVA

Create a custom exception called HexFormatException. Create a function that converts a hex string to a decimal number. Implement the method to throw a HexFormatException if the string is not a hex string. Create a driver program to test the conversion function and the exception handling.

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