How to use OperaDriver class of org.openqa.selenium.opera package

public class Prime {

    public static void main(String[] args) {
        System.out.format("%d is prime: %s.\n", 199, isPrime(199)); // Prime
        System.out.format("%d is prime: %s.\n", 198, isPrime(198)); // Not prime
        System.out.format("%d is prime: %s.\n", 104729, isPrime(104729)); // Prime
        System.out.format("%d is prime: %s.\n", 104727, isPrime(982443529)); // Prime
    }

    /**
     * Tells if a number is prime or not.
     *
     * @param input the input
     * @return If the input is prime or not
     */
    private boolean isPrime(long input) {
    if (input <= 1) return false; // Primes start from 2
    if (input <= 3) return true; // 2 and 3 are primes
    if (input % 2 == 0 || input % 3 == 0) return false; // Not prime if dividable by 2 or 3
    // The rest of the primes are in the shape of 6k-1 and 6k+1
    for (long i = 5; i <= Math.sqrt(input); i += 6) if (input % i == 0 || input % (i + 2) == 0) return false;
    return true;
    }

}

boolean isPrime(long n) {
    if(n < 2){
        return false;
    }
    if(n == 2 || n == 3 || n == 5 || n == 7 || n == 11 || n == 13 || n == 17 || n == 19 || n == 23 || n == 29){
        return true;
    }
    
    long sqrtN = (long) Math.sqrt(n) + 1;
    int[] mods = {1, 7, 11, 13, 17, 19, 23, 29};
    for (long i = 30L; i <= sqrtN; i += 30) {
        for (int mod : mods) {
            if(n % (i + mod) == 0){
                return false;
            }
        }
    }
    return true;
}

interface A {
    void run();
}

public void method1() {}

public void method2() {}

public void mainMethod(String[] args) {
    // Initialise the method map - note, you only have to do this once
    // So, this initialisation code can go into a constructor
    // And mothodMap can be declared as a final instance variable.
    A methodOne = new A() { @Override public void run() { method1(); } };
    A methodTwo = new A() { @Override public void run() { method2(); } };

    Map<Integer, A> methodMap = new HashMap<>();
    methodMap.put(1, methodOne);
    methodMap.put(2, methodTwo);

    Integer input = /* get it from user*/ 1;
    A aMethod = methodMap.get(input);
    aMethod.run();

}