Math : decrementExact

public class DecrementExact {

    public static void main(String[] args) {

        // Ask for user input        System.out.print("Enter an input:");
        // use scanner to read the console input        Scanner scan = new Scanner(System.in);
        // Assign the user to String variable        String s = scan.nextLine();
        // close the scanner object        scan.close();
        // convert the string input to double        int value = Integer.parseInt(s);
        // get the result of decrementExact        int result = Math.decrementExact(value);        System.out.println("Result of the operation is " + result);
    }

}