Generating random numbers and selection and string compariso

import java.util.Scanner;

public class EvenOddQuiz {
    public static void main(String args[]) {

        int rights = 0;
        int wrongs = 0;

            //create Scanner for user input
            Scanner scanner = new Scanner(System.in);

            for (int i = 1; i <=7; i++) {
                //generate a number between 1 and 20 and cast it to int
                int randInt = (int) (1 + Math.random() * 20);

                //show this randInt to the user
                System.out.print("Is " + randInt + " odd or even?");
                //get the response from the user
                String userAnswer = scanner.next();

                //set the correct answer so even or odd
                String correctAnswer;
                if (randInt % 2 == 0) {
                    correctAnswer = "even";
                }
                else {
                    correctAnswer = "odd";
                }

                //compare the user response to correct answer
                if (userAnswer.equals(correctAnswer)) {
                    rights++;
                }
                else {
                    wrongs++;
                }
            }

            System.out.println("rights = " + rights);
            System.out.println("wrongs = " + wrongs);
        }
    }