In the previous lesson, you learned about the basics of Map
. In this lesson, you’ll master the most common operations you can apply to it. You’ll use different strategies to retrieve a value linked to a given key. You’ll get the keys and the values in an instance of a Map
. Finally, you will get its size, inquire about its entries’ properties, and filter its elements according to their characteristics by reusing the same methods you saw for List
and Set
. In the capstone, you will apply these operations to extract the book information from a CSV file and create your library’s book collection.