Adds a runner to the object array called arrayRunners. I want to make it so that if the object parameter (the runner) already exists in the array it returns an error message which is below. My code does not work .... so

public void addRunner(Runner runner) {
    int i;
    for (i = 0; i < arrayRunners.length; i++) {
        if (arrayRunners[i] == null && arrayRunners[i] != runner) {
            arrayRunners[i] = runner;
            break;
        }
        else {
            System.out.println("The runner already exists");

//This prints when I run the method no matter what
        }
    }
}