Learn Object-Oriented Programming in Java/

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Solution Review

Solution Review

Let’s look at the solution to the tasks from the previous lesson.

We'll cover the following...

Task I: Total number of books by an author

The task was to find the total number of books written by an author. Look at the code below.

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import java.util.List;
class Driver {
    public static void main(String[] args) {
        DatasetReader reader = new DatasetReader();
        List<Book> books = reader.readDataset("data.csv");
        String authorName = "J.K. Rowling";
        Book bookInstance = new Book(null, null); // Placeholder instance to access the method
        int bookCount = bookInstance.countBooksByAuthor(books, authorName);
        System.out.println("Total number of books by " + authorName + ": " + bookCount);
    }
}

Code explanation:

The following section provides an overview of the working of each class.

Driver.java: This is the main class that reads the dataset, counts the number of books by author, and prints the results.

DatasetReader.java: It handles reading the dataset from a CSV file and creating Book objects.

Book.java: It represents a book with title and author attributes.

Task II: All the authors in the dataset

The task was to find the names of all the ...