From 7b19243d94b4c8f981f5d6fb39415c4fa09e7b9a Mon Sep 17 00:00:00 2001
From: Matthew <80854685+Matthew-Mak@users.noreply.github.com>
Date: Wed, 8 Oct 2025 16:13:38 +0500
Subject: [PATCH 1/2] Added lesson 3 files

---
 src/lessons/lesson03/Main.java | 489 +++++++++++++++++++++++++++++++++
 1 file changed, 489 insertions(+)
 create mode 100644 src/lessons/lesson03/Main.java

diff --git a/src/lessons/lesson03/Main.java b/src/lessons/lesson03/Main.java
new file mode 100644
index 0000000..a3d3a99
--- /dev/null
+++ b/src/lessons/lesson03/Main.java
@@ -0,0 +1,489 @@
+package lessons.lesson03;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+class Person {
+    private String name;
+    private int age;
+
+    public Person(String Name, int Age) {
+        name = Name;
+        age = Age;
+    }
+
+    public void introduce() {
+        System.out.println("Здравствуйте, моё имя: " + name + ", возраст: " + age);
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+}
+
+class Rectangle {
+    private double length;
+    private double width;
+
+    public Rectangle(double Length, double Width) {
+        length = Length;
+        width = Width;
+    }
+
+    public double calculateSquare() {
+        return length * width;
+    }
+
+    public double calculatePerimeter() {
+        return 2 * (length + width);
+    }
+
+    public double getLength() {
+        return length;
+    }
+
+    public double getWidth() {
+        return width;
+    }
+}
+
+class Car {
+    private String country;
+    private String model;
+    private int yearOfManufacture;
+
+    public Car(String Country, String Model, int YearOfManufacture) {
+        country = Country;
+        model = Model;
+        yearOfManufacture = YearOfManufacture;
+    }
+
+    public void printCarInfo() {
+        System.out.println("Автомобиль: " + model);
+        System.out.println("Страна производства: " + country);
+        System.out.println("Год выпуска: " + yearOfManufacture);
+    }
+
+    public String getCountry() {
+        return country;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public int getYearOfManufacture() {
+        return yearOfManufacture;
+    }
+}
+
+class BankAccount {
+    private String fio;
+    private String accountNumber;
+    private double balance;
+
+    public BankAccount(String Fio, String AccountNumber, double InitialBalance) {
+        fio = Fio;
+        accountNumber = AccountNumber;
+        balance = InitialBalance;
+    }
+
+    public void deposit(double amount) {
+        if (amount > 0) {
+            balance += amount;
+            System.out.println("Пополнение счёта на: " + amount + ". Баланс: " + balance);
+        } else {
+            System.out.println("Сумма не должна быть меньше или равной нулю.");
+        }
+    }
+
+    public void withdraw(double amount) {
+        if (amount > 0 && amount <= balance) {
+            balance -= amount;
+            System.out.println("Снято " + amount + ". Новый баланс: " + balance);
+        } else {
+            System.out.println("Недостаточно средств, либо сумма меньше или равна нулю.");
+        }
+    }
+
+    public double getBalance() {
+        return balance;
+    }
+
+    public String getFio() {
+        return fio;
+    }
+
+    public String getAccountNumber() {
+        return accountNumber;
+    }
+}
+
+class Book {
+    private String isbn;
+    private String name;
+    private String author;
+    private int year;
+    private boolean status; // true - доступна, false - зарезервирована
+
+    private static List<Book> booksList = new ArrayList<>();
+
+    public Book(String isbn, String name, String author, int year) {
+        this.isbn = isbn;
+        this.name = name;
+        this.author = author;
+        this.year = year;
+        this.status = true;
+    }
+
+    public String getBookInfo() {
+        String theStatus;
+        if (status) {
+            theStatus = "Доступна";
+        } else {
+            theStatus = "Зарезервирована";
+        }
+        return "ISBN: " + isbn + ", Название: " + name + ", Автор: " + author +
+            ", Год: " + year + ", Статус: " + theStatus;
+    }
+
+    public static List<Book> getBooks() {
+        return booksList;
+    }
+
+    public static void addNewBook(Book book) {
+        booksList.add(book);
+        System.out.println("Книга добавлена: " + book.getName());
+    }
+
+    public void reserveBook() {
+        if (status) {
+            status = false;
+            System.out.println("Книга \"" + name + "\" зарезервирована.");
+        } else {
+            System.out.println("Книга \"" + name + "\" уже зарезервирована кем-то другим.");
+        }
+    }
+
+    public String getIsbn() {
+        return isbn;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public int getYear() {
+        return year;
+    }
+
+    public boolean isStatus() {
+        return status;
+    }
+}
+
+class OnlineStore {
+    private String code;
+    private String name;
+    private double price;
+    private int count;
+
+    private static List<OnlineStore> productsList = new ArrayList<>();
+
+    public OnlineStore(String code, String name, double price, int count) {
+        this.code = code;
+        this.name = name;
+        this.price = price;
+        this.count = count;
+    }
+
+    public static void addProduct(OnlineStore product) {
+        productsList.add(product);
+        System.out.println("Товар успшено добавлен: " + product.getName());
+    }
+
+    public void buyProduct(int quantity) {
+        if (quantity <= count && quantity > 0) {
+            count -= quantity;
+            double total = price * quantity;
+            System.out.println("Куплено " + quantity + " количество \"" + name +
+                "\". Сумма: " + total);
+        } else {
+            System.out.println("Недостаточно товара на складе или количество меньше/равно нулю.");
+        }
+    }
+
+    public String getProductInfo() {
+        return "Код: " + code + ", Название: " + name + ", Цена: " + price +
+            ", Количество: " + count;
+    }
+
+    public static List<OnlineStore> getProducts() {
+        return productsList;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public int getCount() {
+        return count;
+    }
+}
+
+class BankSystem {
+    private String accountNumber;
+    private String fio;
+    private double balance;
+
+    private static List<BankSystem> accountsList = new ArrayList<>();
+
+    public BankSystem(String accountNumber, String fio, double initialBalance) {
+        this.accountNumber = accountNumber;
+        this.fio = fio;
+        this.balance = initialBalance;
+    }
+
+    public String getAccountInfo() {
+        return "Счет: " + accountNumber + ", ФИО: " + fio + ", Баланс: " + balance;
+    }
+
+    public static void addAccount(BankSystem account) {
+        accountsList.add(account);
+        System.out.println("Счет добавлен: " + account.getAccountNumber());
+    }
+
+    public static void deleteAccount(String accountNumber) {
+        accountsList.removeIf(acc -> acc.getAccountNumber().equals(accountNumber));
+        System.out.println("Счет " + accountNumber + " удален.");
+    }
+
+    public void replenishAccount(double amount) {
+        if (amount > 0) {
+            balance += amount;
+            System.out.println("Счет пополнен на " + amount + ". Новый баланс: " + balance);
+        } else {
+            System.out.println("Сумма должна быть положительной!");
+        }
+    }
+
+    public static void transferMoneyBetweenAccounts(String fromAccount, String toAccount, double amount) {
+        BankSystem from = null;
+        BankSystem to = null;
+
+        for (BankSystem acc : accountsList) {
+            if (acc.getAccountNumber().equals(fromAccount)) {
+                from = acc;
+            }
+            if (acc.getAccountNumber().equals(toAccount)) {
+                to = acc;
+            }
+        }
+
+        if (from != null && to != null) {
+            if (from.balance >= amount && amount > 0) {
+                from.balance -= amount;
+                to.balance += amount;
+                System.out.println("Переведено " + amount + " с " + fromAccount +
+                    " на " + toAccount);
+            } else {
+                System.out.println("Недостаточно средств или неверная сумма!");
+            }
+        } else {
+            System.out.println("Один из счетов не найден!");
+        }
+    }
+
+    public String getAccountNumber() {
+        return accountNumber;
+    }
+
+    public String getFio() {
+        return fio;
+    }
+
+    public double getBalance() {
+        return balance;
+    }
+
+    public static List<BankSystem> getAccounts() {
+        return accountsList;
+    }
+}
+
+class Fighter {
+    private String code;
+    private String name;
+    private int health;
+    private int attack;
+
+    private static List<Fighter> fighters = new ArrayList<>();
+
+    public Fighter(String Code, String Name, int Health, int Attack) {
+        code = Code;
+        name = Name;
+        health = Health;
+        attack = Attack;
+    }
+
+    public void fight(Fighter opponent) {
+        Random random = new Random();
+        Fighter first, second;
+
+        // Подкидываю монетку.
+        if (random.nextBoolean()) {
+            first = this;
+            second = opponent;
+        } else {
+            first = opponent;
+            second = this;
+        }
+
+        System.out.println("\n=== ХАДЖИМЕ ===");
+        System.out.println(first.getName() + " ломает колени оппоненту!");
+        System.out.println();
+
+        int round = 1;
+        while (this.health > 0 && opponent.health > 0) {
+            System.out.println("Раунд " + round);
+
+            if (first.health > 0) {
+                int damage = random.nextInt(first.attack) + 1;
+                second.health -= damage;
+                System.out.println("Поинто, " + first.getName() + " наносит " + damage + " единиц урона!");
+                System.out.println(second.getName() + " HP: " + Math.max(0, second.health));
+
+                if (second.health <= 0) {
+                    System.out.println("\nЦУЗУКЕ, ПОБЕДА ЗА" + first.getName());
+                    break;
+                }
+            }
+
+            // Удар второго бойца
+            if (second.health > 0) {
+                int damage = random.nextInt(second.attack) + 1;
+                first.health -= damage;
+                System.out.println("Поинто, " + second.getName() + " наносит " + damage + " урона!");
+                System.out.println(first.getName() + " HP: " + Math.max(0, first.health));
+
+                if (first.health <= 0) {
+                    System.out.println("\nЦУЗУКЕ, ПОБЕДА ЗА" + second.getName());
+                    break;
+                }
+            }
+
+            System.out.println();
+            round++;
+        }
+
+        System.out.println("=== ЙАМЕ ===\n");
+    }
+
+    public String getFighterInfo() {
+        return "Код: " + code + ", Имя: " + name + ", HP: " + health +
+            ", Атака: " + attack;
+    }
+
+    public static List<Fighter> getFighters() {
+        return fighters;
+    }
+
+    public static void addFighter(Fighter fighter) {
+        fighters.add(fighter);
+        System.out.println("Новый боец: " + fighter.getName());
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getHealth() {
+        return health;
+    }
+
+    public int getAttack() {
+        return attack;
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        // Тест классов и методов один за другим .
+
+        // 1. Person
+        System.out.println("\n----------------------------------------------------------");
+        Person person = new Person("Коил Кирвесгеин", 22);
+        person.introduce();
+
+        // 2. Rectangle
+        System.out.println("\n----------------------------------------------------------");
+        Rectangle rect = new Rectangle(5, 3);
+        System.out.println("Площадь: " + rect.calculateSquare());
+        System.out.println("Периметр: " + rect.calculatePerimeter());
+
+        // 3. Car
+        System.out.println("\n----------------------------------------------------------");
+        Car car = new Car("Япония", "Suzuki Gemini", 2024);
+        car.printCarInfo();
+
+        // 4. BankAccount
+        System.out.println("\n----------------------------------------------------------");
+        BankAccount account = new BankAccount("Дон Фон Пан Эклер", "7355608", 1000);
+        account.deposit(500);
+        account.withdraw(200);
+        System.out.println("Текущий баланс: " + account.getBalance());
+
+        // 5. Book
+        System.out.println("\n----------------------------------------------------------");
+        Book book1 = new Book("8-800-555-35-35", "Волчица и Пряности", "Изуна Хасекура", 1869);
+        Book.addNewBook(book1);
+        System.out.println(book1.getBookInfo());
+        book1.reserveBook();
+
+        // 6. OnlineStore
+        System.out.println("\n----------------------------------------------------------");
+        OnlineStore product = new OnlineStore("Lenovo-Ideapad-3-001", "Ноутбук", 50000, 10);
+        OnlineStore.addProduct(product);
+        System.out.println(product.getProductInfo());
+        product.buyProduct(2);
+
+        // 7. BankSystem
+        System.out.println("\n----------------------------------------------------------");
+        BankSystem acc1 = new BankSystem("880055", "Фрайда К.Ф.", 1700);
+        BankSystem acc2 = new BankSystem("535350", "Зилфатон К.Ф.", 1800);
+        BankSystem.addAccount(acc1);
+        BankSystem.addAccount(acc2);
+        BankSystem.transferMoneyBetweenAccounts("880055", "535350", 1000);
+        System.out.println(acc1.getAccountInfo());
+        System.out.println(acc2.getAccountInfo());
+
+        // 8. StreetFighter
+        System.out.println("\n----------------------------------------------------------");
+        Fighter amiya = new Fighter("5-Star", "Amiya", 100, 35);
+        Fighter lappland = new Fighter("6-Star", "Lappland", 100, 30);
+        Fighter.addFighter(amiya);
+        Fighter.addFighter(lappland);
+        amiya.fight(lappland);
+    }
+}

From 3b93f31c6ab89a1e5e16cee91ca5469c707a345c Mon Sep 17 00:00:00 2001
From: Matthew <80854685+Matthew-Mak@users.noreply.github.com>
Date: Wed, 8 Oct 2025 16:21:16 +0500
Subject: [PATCH 2/2] Small fixes

---
 src/lessons/lesson03/Main.java | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/lessons/lesson03/Main.java b/src/lessons/lesson03/Main.java
index a3d3a99..9d75a2e 100644
--- a/src/lessons/lesson03/Main.java
+++ b/src/lessons/lesson03/Main.java
@@ -371,7 +371,7 @@ public void fight(Fighter opponent) {
                 System.out.println(second.getName() + " HP: " + Math.max(0, second.health));
 
                 if (second.health <= 0) {
-                    System.out.println("\nЦУЗУКЕ, ПОБЕДА ЗА" + first.getName());
+                    System.out.println("\nЦУЗУКЕ, ПОБЕДА ЗА " + first.getName());
                     break;
                 }
             }
@@ -384,7 +384,7 @@ public void fight(Fighter opponent) {
                 System.out.println(first.getName() + " HP: " + Math.max(0, first.health));
 
                 if (first.health <= 0) {
-                    System.out.println("\nЦУЗУКЕ, ПОБЕДА ЗА" + second.getName());
+                    System.out.println("\nЦУЗУКЕ, ПОБЕДА ЗА " + second.getName());
                     break;
                 }
             }
@@ -456,7 +456,7 @@ public static void main(String[] args) {
 
         // 5. Book
         System.out.println("\n----------------------------------------------------------");
-        Book book1 = new Book("8-800-555-35-35", "Волчица и Пряности", "Изуна Хасекура", 1869);
+        Book book1 = new Book("8-800-555-35-35", "Волчица и Пряности", "Изуна Хасекура", 2006);
         Book.addNewBook(book1);
         System.out.println(book1.getBookInfo());
         book1.reserveBook();