Question: Write a program that prompts the user to read three positive hex integers and display their sum in both hex and decimal. Your program should

Write a program that prompts the user to read three positive hex integers and display their sum in both hex and decimal. Your program should prompt the user to read the number again, if the input is incorrect. You must use java.lang.NumberFormatException. (chapter12.AddThreeHexNumbers.java)

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