Need help with lambdas and streams | Together Java | Page 1

proper lagoonBOT Dec 23, 2023, 6:50 PM

<@&987246399047479336> please have a look, thanks.

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ate a method that takes in the List of products and a minimum price, and returns a new List of products that have a price greater than or equal to the minimum price.

Here's an example implementation using lambdas and streams:

import java.util.ArrayList;
import java.util.List;

public class Product {
    private String name;
    private String code;
    private double price;

    public Product(String name, String code, double price) {
        this.name = name;
        this.code = code;
        this.price = price;
    }

    public static List<Product> filterByMinimumPrice(List<Product> products, double minPrice) {
        return products.stream()
                .filter(product -> product.getPrice() >= minPrice)
                .collect(Collectors.toList());
    }

    // getters and setters

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }
}

public class Main {
   public static void main(String[] args) {
       List<Product> products = new ArrayList<>();
       products.add(new Product("Product 1", "001", 10.0));
       products.add(new Product("Product 2", "002", 20.0));
       products.add(new Product("Product 3", "003", 30.0));

       double minPrice = 15.0;

       List<Product> filteredProducts = Product.filterByMinimumPrice(products, minPrice);

       System.out.println("Filtered Products:");
       for (Product product : filteredProducts) {
           System.out.println(product.getName() + " - " + product.getPrice());
       }
   }
}

In this example, the filterByMinimumPrice method takes in the list of products and the minimum price as parameters. It uses a stream to filter out the products whose price is less than the minimum price. The filtered products are then collected into a new list using the Collectors.toList() method.

In the main method, we create a list of products and set a minimum price. We then call the filterByMinimumPrice method with these parameters and print out the filtered products.

I hope this helps! Let me know if you have any further questions.

#Need help with lambdas and streams