Assert 2 strings are in alpha order

I am currently writing . a test to compare leaderboards entries in a betting table, Firstly i have to compare the result picks or the player (which is working) and then i have to compare each players points (which is working) but if both of these attributes are the same i have to assert the player higher on the table is higher alphabetically. I have created the variables username_player and previous_user to do this but cant figure out how to do it, Im trying to put it in the else if section (which i think is correct). There doesn't seem to be an assert option to do this?

public void test_player_leaderboard_entry() {



    int size = playerRows.size();
    Integer previous_total = 0;
    Integer previous_points = 0;
    String previous_user = null;


    for (int i = 0; i < size; i++) {

        //Position
        String position_first_player = Drivers.getDriver().findElement(By.cssSelector("[data-qa-position-value='" + i + "']")).getText();
        //Points
        String points_player = Drivers.getDriver().findElement(By.cssSelector("[data-qa-points-value='" + i + "']")).getText();
        //Username
        String username_player = Drivers.getDriver().findElement(By.cssSelector("[data-qa-player-value='" + i + "']")).getText();
        //Row Number
        Integer row = i + 1;
        Integer point_player = Integer.parseInt(points_player);
        Integer total_of_won_and_looking_good = 0;



        //PICKS
        for (int pick_number = 1; pick_number < 5; pick_number++) {
            String pick_status = Drivers.getDriver().findElement(By.xpath("//*[@id='root']/div/main/section[2]/section/div/ol/a[" + row + "]/li/div[3]/div[" + pick_number + "]/div")).getAttribute("data-qa-pick-state");
            //System.out.println(pick_status);
            if (Integer.parseInt(pick_status) == 2 || Integer.parseInt(pick_status) == 1) {
                total_of_won_and_looking_good = total_of_won_and_looking_good + 1;
            }




        } if(previous_total.equals(total_of_won_and_looking_good)) {

            Assert.assertTrue(previous_points > point_player);
            System.out.println("Picks are the same, points are higher ");

        } else if (previous_total.equals(total_of_won_and_looking_good)&& previous_points.equals(point_player)) {


        }
        previous_total = total_of_won_and_looking_good;
        previous_points = point_player;

        previous_user = username_player;


        System.out.println("On row number " + row + " we find " + username_player + " in position " + position_first_player + " with " + total_of_won_and_looking_good + " correct picks and " + points_player + " points!");
    }
}

}