Question: String inputData is read from input. inputData contains a mix of letters, digits, and other characters. Output each digit that appears in inputData. Ex: If

String inputData is read from input. inputData contains a mix of letters, digits, and other characters. Output each digit that appears in inputData.
Ex: If the input is Year: 2002, then the output is:
2002
Note: Character.isDigit(inputData.charAt(i)) returns true if the character at index i of inputData is a digit.

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