arraylist - invoking method in main method in Java -

i have question regarding using method in main class, here code race class:

import java.util.arraylist;   public class race {      private arraylist<car>cars;       public race(){          cars = new arraylist<car>();     }      public void addcars(car car){         cars.add(car);     } } 

the above have done make arraylist cars ready put in using main method in class:

public class test {      public static void main(string[] args) {         car toyota = new car("toyota",1.0,1.0,2.0,2.0);         cars.addcars(toyota);     } } 

however, has error in last line, shows "cars cannot resolved",i not sure how should fix it, maybe writing getter method in race class?

create instance of race , call addcars

race race = new race(); race.addcars(toyota);