Initial Project

Author: EurusDevSec

JavaOOP/Exercises/BankAccount.java

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+package Exercises;
+
+public class BankAccount {
+    private String accountNumber;
+    private double balance;
+    private String ownerName;
+
+    public BankAccount(String accountNumber, double balance, String owerName) {
+        this.accountNumber = accountNumber;
+        this.balance = balance;
+        this.ownerName = owerName;
+
+    }
+
+    public void deposit(double money) {
+        this.balance += money;
+        System.out.println("Ban da nap " + money);
+    }
+
+    public void withdraw(double money) {
+        if (this.balance >= 0 && money <= this.balance) {
+            this.balance -= money;
+            System.out.println("So du con lai la: " + this.balance);
+
+        } else {
+            System.out.println("So du khong du hoac thao tac khong hop le");
+
+        }
+    }
+
+    public void checkBalance() {
+        System.out.println("|--------------|");
+        System.out.println("Thong tin tai khoan: cua khach hang: " + this.ownerName);
+        System.out.println("So tai khoan: " + accountNumber);
+        System.out.println("So du hien tai la: " + this.balance);
+        System.out.println("|--------------|");
+
+    }
+
+    public static void main(String[] args) {
+        BankAccount bankaccount = new BankAccount("id11222", 50000, "Eury");
+        bankaccount.checkBalance();
+
+    }
+
+}

JavaOOP/Exercises/Book.java

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+package Exercises;
+
+public class Book {
+    private String title;
+    private String author;
+    private String pages;
+    private String isOpen;
+
+    public Book(String title, String author, String pages, String isOpen) {
+        this.title = title;
+        this.author = author;
+        this.pages = pages;
+
+    }
+
+    // is open
+    public void open() {
+        System.out.println("Book shop is Open");
+    }
+
+    public void close() {
+        System.out.println("Book shop is close");
+    }
+
+    public void getInfo() {
+        System.out.println(
+                "Day la sach co ten " + this.title + ", Tac gia: " + this.author + ", So trang: " + this.pages);
+    }
+
+    public static void main(String[] agrs) {
+        Book book = new Book(null, null, null, null);
+    }
+}

JavaOOP/Exercises/Encapsulation/Employee.java

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+package Exercises.Encapsulation;
+
+public class Employee {
+    private String id;
+    private String name;
+    private double salary;
+
+    public Employee(String id, String name, double salary) {
+        this.id = id;
+        this.name = name;
+        this.salary = salary;
+    }
+
+    // getter
+    public String getId() {
+        return this.id;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public double getSalary() {
+        return this.salary;
+    }
+
+    // setter
+
+    public void setId(String id) {
+        if (this.id == null) {
+            this.id = id;
+        }
+    }
+
+    public void setName(String name) {
+        if (this.name == null) {
+            this.name = name;
+        }
+
+    }
+
+    public void setSalary(double salary) {
+        if (this.salary > 0) {
+            this.salary = salary;
+        }
+    }
+
+    public void displayInfo() {
+        System.out.println("Thong tin nguoi dung: ");
+        System.out.println("id: " + this.id);
+        System.out.println("name: " + this.name);
+        System.out.println("Salary: " + this.salary);
+
+    }
+
+    public static void main(String[] args) {
+        Employee employee = new Employee("id1", "Violet", 999999);
+        employee.displayInfo();
+    }
+}

JavaOOP/Exercises/Encapsulation/Rectangle.class

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+package Exercises.Encapsulation;
+
+public class Rectangle {
+    private double width;
+    private double height;
+
+    public Rectangle(double width, double height) {
+        this.width = width;
+        this.height = height;
+
+    }
+
+    // getter
+    public double getWidth() {
+        return width;
+    }
+
+    public double getHeight() {
+        return height;
+    }
+
+    // setter
+    public void setWidth(double width) {
+        if (this.width >= 0) {
+            this.width = width;
+        }
+
+    }
+
+    public void setHeight(double height) {
+        if (this.height >= 0) {
+            this.height = height;
+        }
+    }
+
+    public double calculateArea() {
+        return this.height * this.width;
+
+    }
+
+    public double calculatePerimeter() {
+        return 2 * (this.height + this.width);
+    }
+
+    public static void main(String[] args) {
+        Rectangle rectangle = new Rectangle(5, 6);
+        System.out.println(rectangle.calculateArea());
+        System.out.println(rectangle.calculatePerimeter());
+
+    }
+
+}

JavaOOP/Exercises/Encapsulation/Rectangle.java

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+package Exercises.Encapsulation;
+
+public class Rectangle {
+    private double width;
+    private double height;
+
+    public Rectangle(double width, double height) {
+        this.width = width;
+        this.height = height;
+
+    }
+
+    // getter
+    public double getWidth() {
+        return width;
+    }
+
+    public double getHeight() {
+        return height;
+    }
+
+    // setter
+    public void setWidth(double width) {
+        if (this.width >= 0) {
+            this.width = width;
+        }
+
+    }
+
+    public void setHeight(double height) {
+        if (this.height >= 0) {
+            this.height = height;
+        }
+    }
+
+    public double calculateArea() {
+        return this.height * this.width;
+
+    }
+
+    public double calculatePerimeter() {
+        return 2 * (this.height + this.width);
+    }
+
+    public static void main(String[] args) {
+        Rectangle rectangle = new Rectangle(5, 6);
+        System.out.println(rectangle.calculateArea());
+        System.out.println(rectangle.calculatePerimeter());
+
+    }
+
+}

JavaOOP/Exercises/Encapsulation/tempCodeRunnerFile.java

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+package Exercises.Inheritance.BaiTap4_1;
+
+public class Car extends Vehicle {
+    private int doors;
+    private String fuelType;
+
+    public Car(String brand, int year, double speed, int doors, String fuelType) {
+        super(brand, year, speed);
+        this.doors = doors;
+        this.fuelType = fuelType;
+    }
+}

JavaOOP/Exercises/Inheritance/BaiTap4_1/Car.java

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+package Exercises.Inheritance.BaiTap4_1;
+
+public class Motorcycle extends Vehicle {
+    private int engineSize;
+
+    public Motorcycle(String brand, int year, double speed, int engineSize) {
+        super(brand, year, speed);
+        this.engineSize = engineSize;
+    }
+
+}

JavaOOP/Exercises/Inheritance/BaiTap4_1/Motorcycle.java

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+package Exercises.Inheritance.BaiTap4_1;
+
+public class Vehicle {
+    protected String brand;
+    protected int year;
+    protected double speed;
+
+    public Vehicle(String brand, int year, double speed) {
+        this.brand = brand;
+        this.year = year;
+        this.speed = speed;
+
+    }
+
+}

JavaOOP/Exercises/Inheritance/BaiTap4_1/Vehicle.java

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+package Exercises.Inheritance.BaiTap4_2;
+
+import java.lang.Math;
+
+public class Circle extends Shape {
+    private double radius = 0.0;
+
+    public Circle(String color, double radius) {
+        super(color);
+        this.radius = radius;
+    }
+
+    @Override
+    public double calculateArea() {
+        return Math.PI * this.radius * this.radius;
+    }
+
+}