Repository update with Object related code

src/com/advanced/collections/arraylist/Product.java

@@ -0,0 +1,62 @@
+package com.advanced.collections.arraylist;
+
+import java.util.Objects;
+
+public class Product {
+
+    private String name;
+    private double price;
+    private String description;
+
+    public Product(String name, double price, String description) {
+        this.name = name;
+        this.price = price;
+        this.description = description;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public void setPrice(double price) {
+        this.price = price;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Product product = (Product) o;
+        return Double.compare(product.price, price) == 0 && Objects.equals(name, product.name) && Objects.equals(description, product.description);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, price, description);
+    }
+
+    @Override
+    public String toString() {
+        return "Product{" +
+                "name='" + name + '\'' +
+                ", price=" + price +
+                ", description='" + description + '\'' +
+                '}';
+    }
+}

src/com/advanced/collections/arraylist/ToDoListApp.java

@@ -0,0 +1,56 @@
+package com.advanced.collections.arraylist;
+
+import java.util.ArrayList;
+import java.util.Collections;
+
+public class ToDoListApp {
+
+    public static void main(String[] args) {
+
+        ArrayList<String> urgentTasks = new ArrayList<>();
+        ArrayList<String> allTasks = new ArrayList<>();
+
+
+        urgentTasks.add("Repairing the car");
+        urgentTasks.add("Paying the checks");
+
+        allTasks.add("Cleaning the bathroom");
+        allTasks.add("Mowing the lawn");
+        allTasks.add("Going to the grocery store");
+
+        Collections.swap(urgentTasks, 0, 1);
+        //urgentTasks.clear();
+        if (!urgentTasks.isEmpty()) {
+            System.out.println("Urgent tasks:");
+            for (String task : urgentTasks) {
+                System.out.println("- " + task);
+            }
+        }
+
+        allTasks.addAll(urgentTasks);
+        Collections.sort(allTasks, Collections.reverseOrder());
+
+        System.out.println("All tasks:");
+        for (String task : allTasks) {
+            System.out.println("- " + task);
+        }
+
+        System.out.println("--------------------------------------");
+        if (allTasks.contains("Cleaning the bathroom")){
+            System.out.println("I haven't cleaned the bathroom");
+        }
+
+        System.out.println("--------------------------------------");
+        System.out.println("The first 3 most important tasks:");
+        for (String task : allTasks.subList(0, 3)) {
+            System.out.println("- " + task);
+        }
+
+        Collections.shuffle(allTasks);
+        System.out.println("--------------------------------------");
+        System.out.println("Shuffled tasks:");
+        for (String task : allTasks) {
+            System.out.println("- " + task);
+        }
+    }
+}

src/com/advanced/collections/arraylist/WebShopApp.java

@@ -0,0 +1,32 @@
+package com.advanced.collections.arraylist;
+
+import java.util.ArrayList;
+
+public class WebShopApp {
+
+    public static void main(String[] args) {
+        ArrayList<Product> products = new ArrayList<>();
+
+        products.add(new Product("Fidget spinner", 3.99, "It's fun."));
+        products.add(new Product("Earbud", 39.99, "Extremely clear sound. Waterproof."));
+        products.add(new Product("Earbud", 39.99, "Extremely clear sound. Waterproof."));
+
+        products.add(1, new Product("36 AAA batteries", 10.99, "High-performance alkaline batteries."));
+
+        products.remove(2);
+        //products.remove(new Product("Earbud", 39.99, "Extremely clear sound. Waterproof."));
+
+        products.set(0, new Product("Rubber duck", 5.99, "You can't have bath without this."));
+
+        //System.out.println(products);
+        for (Product product : products) {
+            System.out.println(product);
+        }
+
+        System.out.println("The third element in the list:");
+        System.out.println(products.get(2));
+
+        System.out.println(products.size() + " products can be found in the list.");
+
+    }
+}

src/com/advanced/debugging/RockPaperScissorsApp.java

@@ -16,11 +16,11 @@ public static void main(String[] args) {
             System.out.print("Your move: ");
             String userMove = inputScanner.nextLine().toLowerCase();
 
-            if (userMove.equals("quit")){
+            if (userMove.equals("quit")) {
                 break;
             }
 
-            if (isValidInput(userMove)){
+            if (isValidInput(userMove)) {
                 String opponentMove = generateOpponentMove();
                 System.out.println("Your opponent's move: " + opponentMove);
                 whoWon(userMove, opponentMove);
@@ -31,13 +31,13 @@ public static void main(String[] args) {
         }
     }
 
-    private static boolean isValidInput(String userInput){
+    private static boolean isValidInput(String userInput) {
         return userInput.equals("rock") || userInput.equals("scissors") || userInput.equals("paper");
     }
 
-    private static String generateOpponentMove(){
+    private static String generateOpponentMove() {
         Random randomNumberGenerator = new Random();
-        switch (randomNumberGenerator.nextInt(13)){
+        switch (randomNumberGenerator.nextInt(3)){
             case 0:
             default:
                 return "rock";

src/com/advanced/objectclone/Pizza.java

@@ -0,0 +1,46 @@
+package com.advanced.objectclone;
+
+import java.util.Objects;
+
+public class Pizza implements Cloneable{
+
+    private String name;
+    private PizzaSize pizzaSize;
+    private double price;
+
+    public Pizza(String name, PizzaSize pizzaSize) {
+        this.name = name;
+        this.pizzaSize = pizzaSize;
+        this.price = calculatePrice();
+    }
+
+    private double calculatePrice() {
+        switch (pizzaSize) {
+            case SMALL:
+            default:
+                return 5.99;
+            case MEDIUM:
+                return 7.99;
+            case LARGE:
+                return 10.99;
+        }
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public PizzaSize getPizzaSize() {
+        return pizzaSize;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    @Override
+    protected Object clone() throws CloneNotSupportedException {
+        return super.clone();
+    }
+
+}

src/com/advanced/objectclone/PizzaApp.java

@@ -0,0 +1,25 @@
+package com.advanced.objectclone;
+
+public class PizzaApp {
+
+    public static void main(String[] args) throws CloneNotSupportedException {
+        System.out.println("Available sizes:");
+        for (PizzaSize pizzaSize : PizzaSize.values()) {
+            System.out.println("- " + pizzaSize.getPizzaSizeText());
+        }
+        System.out.println();
+
+        Pizza pizzaOrder = new Pizza("Margareta", PizzaSize.MEDIUM);
+        System.out.println("I ordered the following pizza:");
+        System.out.println("Name: " + pizzaOrder.getName());
+        System.out.println("Size: " + pizzaOrder.getPizzaSize().getPizzaSizeText());
+        System.out.println("Price: $" + pizzaOrder.getPrice());
+
+        Pizza samePizza = (Pizza) pizzaOrder.clone();
+        System.out.println("I ordered another pizza:");
+        System.out.println("Name: " + samePizza.getName());
+        System.out.println("Size: " + samePizza.getPizzaSize().getPizzaSizeText());
+        System.out.println("Price: $" + samePizza.getPrice());
+    }
+
+}

src/com/advanced/objectclone/PizzaSize.java

@@ -0,0 +1,15 @@
+package com.advanced.objectclone;
+
+public enum PizzaSize {
+    SMALL("Small size"), MEDIUM("Medium size"), LARGE("Large size");
+
+    private String pizzaSizeText;
+
+    PizzaSize(String pizzaSizeText) {
+        this.pizzaSizeText = pizzaSizeText;
+    }
+
+    public String getPizzaSizeText() {
+        return pizzaSizeText;
+    }
+}

src/com/advanced/objectequals/Pizza.java

@@ -0,0 +1,61 @@
+package com.advanced.objectequals;
+
+import java.util.Arrays;
+import java.util.Objects;
+
+public class Pizza implements Cloneable{
+
+    private String name;
+    private PizzaSize pizzaSize;
+    private double price;
+
+    public Pizza(String name, PizzaSize pizzaSize) {
+        this.name = name;
+        this.pizzaSize = pizzaSize;
+        this.price = calculatePrice();
+    }
+
+    private double calculatePrice() {
+        switch (pizzaSize) {
+            case SMALL:
+            default:
+                return 5.99;
+            case MEDIUM:
+                return 7.99;
+            case LARGE:
+                return 10.99;
+        }
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public PizzaSize getPizzaSize() {
+        return pizzaSize;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    @Override
+    protected Object clone() throws CloneNotSupportedException {
+        return super.clone();
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (!(o instanceof Pizza)) {
+            return false;
+        }
+        Pizza pizza = (Pizza) o;
+        return Objects.equals(pizza.name, name) &&
+                price == pizza.price &&
+                pizzaSize == pizza.pizzaSize;
+
+    }
+}

src/com/advanced/objectequals/PizzaApp.java

@@ -0,0 +1,29 @@
+package com.advanced.objectequals;
+
+public class PizzaApp {
+
+    public static void main(String[] args) throws CloneNotSupportedException, NoSuchMethodException {
+        System.out.println("Available sizes:");
+        for (PizzaSize pizzaSize : PizzaSize.values()) {
+            System.out.println("- " + pizzaSize.getPizzaSizeText());
+        }
+        System.out.println();
+
+        Pizza pizzaOrder = new Pizza("Margareta", PizzaSize.MEDIUM);
+        System.out.println("I ordered the following pizza:");
+        System.out.println("Name: " + pizzaOrder.getName());
+        System.out.println("Size: " + pizzaOrder.getPizzaSize().getPizzaSizeText());
+        System.out.println("Price: $" + pizzaOrder.getPrice());
+
+        Pizza samePizza = (Pizza) pizzaOrder.clone();
+        System.out.println("I ordered another pizza:");
+        System.out.println("Name: " + samePizza.getName());
+        System.out.println("Size: " + samePizza.getPizzaSize().getPizzaSizeText());
+        System.out.println("Price: $" + samePizza.getPrice());
+
+        Pizza anotherPizza = new Pizza("Margareta", PizzaSize.LARGE);
+        System.out.println(pizzaOrder.equals(anotherPizza));
+
+    }
+
+}

src/com/advanced/objectequals/PizzaSize.java

@@ -0,0 +1,15 @@
+package com.advanced.objectequals;
+
+public enum PizzaSize {
+    SMALL("Small size"), MEDIUM("Medium size"), LARGE("Large size");
+
+    private String pizzaSizeText;
+
+    PizzaSize(String pizzaSizeText) {
+        this.pizzaSizeText = pizzaSizeText;
+    }
+
+    public String getPizzaSizeText() {
+        return pizzaSizeText;
+    }
+}