What is the output of the following code segment?

import java.util.ArrayList;
public class Test {
    public static void main(String[] args) {
       ArrayList<String> letters = new ArrayList<>();
       letters.add("a");
       letters.add("b");
       letters.add("c");
       for (int i = 0; i < letters.size(); i++) {
          System.out.print(letters.get(i));
       }
    }
}