Write a Java program that checks whether the given string contains only digits (ASCII characters 0-9) and returns true or false. You must include a simple constructor and perform your core counting logic in a class method named OnlyDigits (not in main). Test your program with the given strings: "95784846896" "301 860 4000" "9A48@9Z96" Hint: You may use the Java Character.isDigit() or String.matches() methods.

 

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