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Working with column types

You're building a product catalog for a tech training startup. Before creating courses, you need to analyze the product pricing-understanding the price range helps determine which products to prioritize. Working with typed columns like DoubleColumn gives you access to statistical methods that generic columns don't provide.

The Table and DoubleColumn classes have been imported for you.

Cet exercice fait partie du cours

Importing Data in Java

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Instructions

  • Read "products.csv" into the products table.
  • Access the "Price" column and store it in prices.
  • Print the mean price.

Exercice interactif pratique

Essayez cet exercice en complétant cet exemple de code.

public class ProductCatalog {
    public static void main(String[] args) {
    	try {
          // Load products.csv into the products table
          Table products = Table.____().csv("____");

		  // Access the Price column and store it in prices
          DoubleColumn ____ = products.doubleColumn("____");
          
          // Print the mean price
          System.out.println("Price Stats - Min: $" + prices.min() +
                  ", Max: $" + prices.max() +
                  ", Mean: $" + prices.____());

          System.out.println(products.first(5));
        } catch (Exception e) {
            System.err.println("Error reading CSV files: " + e.getMessage());
        }
    }
}
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