Question: Java program :The program Telephone Digits outputs only telephone digits that correspond to uppercase letters. Rewrite the program so that it processes bothuppercase and lowercase
Java program :The program Telephone Digits outputs only telephone digits that correspond to uppercase letters. Rewrite the program so that it processes bothuppercase and lowercase letters and outputs the corresponding telephonedigit. If the input is other than an uppercase or lowercase letter, the programmust output an appropriate error message.
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