import java.util.ArrayList;

/**
 * A class to hold details of books I've read this year.
 * 
 * @author Arran D. Stewart
 * @version 2018.03.01
 */
public class BooksReadJournal {
    // An ArrayList for storing the titles of books read.
    private ArrayList<String> bookTitles;
        
    /**
     * Create a BooksReadJournal object
     */
    public BooksReadJournal() {
        bookTitles = new ArrayList<>();
    }
    
    /**
     * Add a book to the collection.
     * @param title The title of the book to be added.
     */
    public void addBook(String title) {
        bookTitles.add(title);
    }
    
    /**
     * Return the number of books in the collection.
     * @return The number of books in the collection.
     */
    public int getNumberOfBooks() {
        return bookTitles.size();
    }
    
    /**
     * Print the details of a book from the collection.
     * @param index The index of the book whose details are to be printed.
     */
    public void printBookTitle(int index) {
        if(index >= 0 && index < bookTitles.size()) {
            String title = bookTitles.get(index);
            System.out.println(title);
        }
    }
    
    /**
     * Remove a book from the collection.
     * @param index The index of the book to be removed.
     */
    public void removeBook(int index) {
        if(index >= 0 && index < bookTitles.size()) {
            bookTitles.remove(index);
        }
    }
}