Suranchiyev

public class Main {
    public static void main(String[] args) {
        Car car = CarFactory.getCar("to work");
        car.drive();
        System.out.println("-------");

        car = CarFactory.getCar("to city");
        car.drive();
    }

Suranchiyev

import java.util.ArrayList;
import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        PizzaBuilder pizzaBuilder = new PizzaBuilder();
        // use method chaining to build properties
        pizzaBuilder.setName("Veggie").setPrice(15.99).setToppings(new ArrayList<>(Arrays.asList("broccoli", "squash", "tomatoes")));
        pizzaBuilder.setSize(11).setTips(4.00);

Suranchiyev

import java.util.ArrayList;
import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        Pizza pizza = new Pizza("Veggie", 15.99, new ArrayList<>(Arrays.asList("broccoli", "squash", "tomatoes")));
        // after creating an object, there is no way to change created object
        System.out.println(pizza.getName());
        System.out.println(pizza.getPrice());
        System.out.println(pizza.getToppings());

Suranchiyev

public class Main {
    public static void main(String[] args) {
        // Balance obj = new Balance(); doesn't compile - constructor is private
        Balance husband = Balance.getInstance();
        System.out.println("Available balance: "  + husband.getBalanceAvailable());
        husband.spend(250.00); // husband goes for shopping
        System.out.println("Available balance: "  + husband.getBalanceAvailable());

        System.out.println("---------");

Suranchiyev

public class Main {
    public static void main(String[] args) {
        // Balance obj = new Balance(); doesn't compile - constructor is private
        Balance husband = Balance.getInstance();
        System.out.println("Available balance: "  + husband.getBalanceAvailable());
        husband.spend(250.00); // husband goes for shopping
        System.out.println("Available balance: "  + husband.getBalanceAvailable());

        System.out.println("---------");

Suranchiyev

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

public class Main {
    public static void main(String[] args) {
        List<Integer> list = new ArrayList<>(Arrays.asList(2, 1, 3, 4, 8, 7, 6, 5, 9, 10));

        // forEach method accepts Consumer functional interface
        // forEach(Consumer<? super T> action)

Suranchiyev

import java.util.ArrayList;
import java.util.List;
import java.util.function.Predicate;

public class Main {
    public static void main(String[] args) {
        List<Car> cars = new ArrayList<>();
        cars.add(new Car("Tesla", "white", 2019));
        cars.add(new Car("Tesla", "black", 2021));
        cars.add(new Car("BMW", "white", 2018));

Suranchiyev

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

public class Main {
    public static void main(String[] args) {
        List<Car> cars = new ArrayList<>();
        cars.add(new Car("Tesla", "white", 2019));
        cars.add(new Car("Tesla", "black", 2021));
        cars.add(new Car("BMW", "white", 2018));
        cars.add(new Car("BMW", "red", 2017));

Suranchiyev

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

public class Main {
    public static void main(String[] args) {
        List<Car> cars = new ArrayList<>();
        cars.add(new Car("Tesla", "white", 2019));
        cars.add(new Car("Tesla", "black", 2021));
        cars.add(new Car("BMW", "white", 2018));
        cars.add(new Car("BMW", "red", 2017));

Suranchiyev

import java.util.Map;
import java.util.TreeMap;

public class Main {
    public static void main(String[] args) {
        Map<Integer, Double> items = new TreeMap<>();
        items.put(1, 1.05);
        items.put(2, 0.50);
        items.put(3, 0.76);
        items.put(4, 1.47);