Accessing Methods of Objects in ArrayLists

I am still fairly new to Java and I'm trying to understand Array Lists better. If you create an Array List and put objects within the Array List, how can you access the methods of the object?

For example, the code below is just a simple Book class. If I were to write this code:

   ArrayList booksList = new ArrayList();
   Book myBook = new Book();

How would I access the getAuthor method of myBook?
public class Book
     public string Author;
     public string Title;
     public String getAuthor() {
       return Author;

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  ArrayList booksList = new ArrayList();
   Book myBook = new Book();

   // get author of first (java indexes are 0-based) book in list

   String author = booksList.get(0).getAuthor();

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Get the object in the ArrayList and call it's method
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