Salad.java

import java.util.*;

public class Salad {

    private  String name;
    private  List<Vegetable> products;

    public Salad(String name) {
        this.name = name;
        this.products = new ArrayList<>();
    }

    public String getName() {
        return name;
    }

    public int getTotalCalories() {
        return this.products.stream().mapToInt(Vegetable::getCalories).sum();
    }

    public int getProductCount() {
        return this.products.size();
    }

    public void add(Vegetable product) {
        this.products.add(product);
    }

    @Override
    public String toString() {
        StringBuilder output = new StringBuilder(String.format("* Salad %s is %d calories and have %d products:",
                this.getName(), this.getTotalCalories(), this.getProductCount()));
        output.append(System.lineSeparator());
        this.products.forEach(e -> output.append(e).append(System.lineSeparator()));
        return output.toString().trim();
    }
}