added lab1 ex2

src/lab1_decorator/ex1/AirbagDecorator.java

@@ -0,0 +1,22 @@
+package lab1_decorator.ex1;
+
+public class AirbagDecorator extends CarDecorator {
+    public AirbagDecorator(Car car) {
+        super(car);
+    }
+
+    @Override
+    public double getCost() {
+        return 10 + super.getCost();
+    }
+
+    @Override
+    public double getSecurityLevel() {
+        return 10 + super.getSecurityLevel();
+    }
+
+    @Override
+    public String getDescription() {
+        return super.getDescription() + ", Airbag System";
+    }
+}

src/lab1_decorator/ex1/AntiSlidingSystemDecorator.java

@@ -0,0 +1,22 @@
+package lab1_decorator.ex1;
+
+public class AntiSlidingSystemDecorator extends CarDecorator {
+    public AntiSlidingSystemDecorator(Car car) {
+        super(car);
+    }
+
+    @Override
+    public double getCost() {
+        return 20 + super.getCost();
+    }
+
+    @Override
+    public double getSecurityLevel() {
+        return 5 + super.getSecurityLevel();
+    }
+
+    @Override
+    public String getDescription() {
+        return super.getDescription() + ", Anti Sliding System";
+    }
+}

src/lab1_decorator/ex1/BreakingSystemDecorator.java

@@ -0,0 +1,22 @@
+package lab1_decorator.ex1;
+
+public class BreakingSystemDecorator extends CarDecorator {
+    public BreakingSystemDecorator(Car car) {
+        super(car);
+    }
+
+    @Override
+    public double getCost() {
+        return 6 + super.getCost();
+    }
+
+    @Override
+    public double getSecurityLevel() {
+        return 8 + super.getSecurityLevel();
+    }
+
+    @Override
+    public String getDescription() {
+        return super.getDescription() + ", Breaking System";
+    }
+}

src/lab1_decorator/ex1/Car.java

@@ -0,0 +1,7 @@
+package lab1_decorator.ex1;
+
+public interface Car {
+    String getDescription();
+    double getCost();
+    double getSecurityLevel();
+}

src/lab1_decorator/ex1/CarBerlin.java

@@ -0,0 +1,18 @@
+package lab1_decorator.ex1;
+
+public class CarBerlin implements Car {
+    @Override
+    public String getDescription() {
+        return "A beautiful Berlin";
+    }
+
+    @Override
+    public double getCost() {
+        return 100;
+    }
+
+    @Override
+    public double getSecurityLevel() {
+        return 2;
+    }
+}

src/lab1_decorator/ex1/CarBreak.java

@@ -0,0 +1,18 @@
+package lab1_decorator.ex1;
+
+public class CarBreak implements Car {
+    @Override
+    public String getDescription() {
+        return "A family break";
+    }
+
+    @Override
+    public double getCost() {
+        return 50;
+    }
+
+    @Override
+    public double getSecurityLevel() {
+        return 0;
+    }
+}

src/lab1_decorator/ex1/CarDecorator.java

@@ -0,0 +1,24 @@
+package lab1_decorator.ex1;
+
+public abstract class CarDecorator implements Car {
+    public Car car;
+    public String name;
+
+    public CarDecorator(Car car) {
+        this.car = car;
+    }
+
+    public String getDescription() {
+        return car.getDescription();
+    }
+
+    @Override
+    public double getCost() {
+        return car.getCost();
+    }
+
+    @Override
+    public double getSecurityLevel() {
+        return car.getSecurityLevel();
+    }
+}

src/lab1_decorator/ex1/CarDecoratorLauncher.java

@@ -0,0 +1,38 @@
+package lab1_decorator.ex1;
+
+public class CarDecoratorLauncher {
+
+    public static void main(String[] args) {
+        CarDecoratorLauncher launcher = new CarDecoratorLauncher();
+        launcher.launch();
+    }
+
+    public void launch() {
+        Car car1 = new CarBerlin();
+        car1 = new AirbagDecorator(car1);
+        car1 = new AirbagDecorator(car1);
+        car1 = new EngineDecorator(car1);
+        car1 = new ColorDecorator(car1);
+        printCarInfos(car1);
+
+        Car car2 = new CarSport();
+        car2 = new AntiSlidingSystemDecorator(car2);
+        car2 = new BreakingSystemDecorator(car2);
+        printCarInfos(car2);
+
+        Car car3 = new CarBreak();
+        car3 = new AirbagDecorator(car3);
+        car3 = new EngineDecorator(car3);
+        car3 = new ColorDecorator(car3);
+        car3 = new AntiSlidingSystemDecorator(car3);
+        car3 = new BreakingSystemDecorator(car3);
+        printCarInfos(car3);
+    }
+
+    public void printCarInfos(Car car) {
+        System.out.println("Car description : " + car.getDescription());
+        System.out.println("Car cost : " + car.getCost());
+        System.out.println("Car security level : " + car.getSecurityLevel());
+        System.out.println();
+    }
+}

src/lab1_decorator/ex1/CarSport.java

@@ -0,0 +1,18 @@
+package lab1_decorator.ex1;
+
+public class CarSport implements Car {
+    @Override
+    public String getDescription() {
+        return "A robust sport car";
+    }
+
+    @Override
+    public double getCost() {
+        return 300;
+    }
+
+    @Override
+    public double getSecurityLevel() {
+        return 1;
+    }
+}

src/lab1_decorator/ex1/ColorDecorator.java

@@ -0,0 +1,18 @@
+package lab1_decorator.ex1;
+
+
+public class ColorDecorator extends CarDecorator {
+    public ColorDecorator(Car car) {
+        super(car);
+    }
+
+    @Override
+    public double getCost() {
+        return 3 + super.getCost();
+    }
+
+    @Override
+    public String getDescription() {
+        return super.getDescription() + ", Color";
+    }
+}

src/lab1_decorator/ex1/EngineDecorator.java

@@ -0,0 +1,17 @@
+package lab1_decorator.ex1;
+
+public class EngineDecorator extends CarDecorator {
+    public EngineDecorator(Car car) {
+        super(car);
+    }
+
+    @Override
+    public double getCost() {
+        return 20 + super.getCost();
+    }
+
+    @Override
+    public String getDescription() {
+        return super.getDescription() + ", Engine";
+    }
+}

src/lab1_decorator/ex2/BorderDecorator.java

@@ -0,0 +1,16 @@
+package lab1_decorator.ex2;
+
+public class BorderDecorator extends ShapeDecorator {
+    private int thickness;
+
+    public BorderDecorator(Shape shape, int thickness) {
+        super(shape);
+        this.thickness = thickness;
+    }
+
+    @Override
+    public void draw() {
+        super.draw();
+        System.out.printf("    with a %dpx border%n", thickness);
+    }
+}

src/lab1_decorator/ex2/Circle.java

@@ -0,0 +1,14 @@
+package lab1_decorator.ex2;
+
+public class Circle extends Shape {
+    private double radius;
+
+    public Circle(double radius) {
+        this.radius = radius;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Drawing a circle");
+    }
+}

src/lab1_decorator/ex2/ColorDecorator.java

@@ -0,0 +1,16 @@
+package lab1_decorator.ex2;
+
+public class ColorDecorator extends ShapeDecorator {
+    private String color;
+
+    public ColorDecorator(Shape shape, String color) {
+        super(shape);
+        this.color = color;
+    }
+
+    @Override
+    public void draw() {
+        super.draw();
+        System.out.printf("    in a %s color%n", color);
+    }
+}

src/lab1_decorator/ex2/Rectangle.java

@@ -0,0 +1,16 @@
+package lab1_decorator.ex2;
+
+public class Rectangle extends Shape {
+    private double width;
+    private double height;
+
+    public Rectangle(double width, double height) {
+        this.width = width;
+        this.height = height;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Drawing a rectangle");
+    }
+}

src/lab1_decorator/ex2/Shape.java

@@ -0,0 +1,5 @@
+package lab1_decorator.ex2;
+
+public abstract class Shape {
+    public abstract void draw();
+}

src/lab1_decorator/ex2/ShapeDecorator.java

@@ -0,0 +1,14 @@
+package lab1_decorator.ex2;
+
+public abstract class ShapeDecorator extends Shape {
+    private Shape shape;
+
+    public ShapeDecorator(Shape shape) {
+        this.shape = shape;
+    }
+
+    @Override
+    public void draw() {
+        shape.draw();
+    }
+}

src/lab1_decorator/ex2/ShapeDemo.java

@@ -0,0 +1,39 @@
+package lab1_decorator.ex2;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ShapeDemo {
+    private static List<Shape> shapes;
+
+    public static void main(String[] args) {
+        shapes = new ArrayList<Shape>();
+
+        Shape shape1 = new Circle(10);
+        Shape shape2 = new Square(5);
+        Shape shape3 = new Rectangle(9, 3);
+
+        shapes.add(shape1);
+        shapes.add(shape2);
+        shapes.add(shape3);
+
+        for(Shape s : shapes) {
+            s.draw();
+        }
+
+        shape1 = new BorderDecorator(shape1, 4);
+        shape1 = new ColorDecorator(shape1, "Red");
+        shape1 = new TextureDecorator(shape1, "points");
+        shape1 = new TextureDecorator(shape1, "lines");
+        shapes.add(shape1);
+        shape2 = new ColorDecorator(shape2, "Green");
+        shapes.add(shape2);
+
+        shape3 = new BorderDecorator(shape3, 6);
+        shapes.add(shape3);
+
+        for(Shape s : shapes) {
+            s.draw();
+        }
+    }
+}

src/lab1_decorator/ex2/Square.java

@@ -0,0 +1,14 @@
+package lab1_decorator.ex2;
+
+public class Square extends Shape {
+    private double size;
+
+    public Square(double size) {
+        this.size = size;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Drawing a square");
+    }
+}

src/lab1_decorator/ex2/TextureDecorator.java

@@ -0,0 +1,16 @@
+package lab1_decorator.ex2;
+
+public class TextureDecorator extends ShapeDecorator {
+    private String texture;
+
+    public TextureDecorator(Shape shape, String texture) {
+        super(shape);
+        this.texture = texture;
+    }
+
+    @Override
+    public void draw() {
+        super.draw();
+        System.out.printf("    using %s%n", this.texture);
+    }
+}

src/learn/simple_decorator/Component.java

@@ -0,0 +1,5 @@
+package learn.simple_decorator;
+
+public interface Component {
+    void operation();
+}

src/learn/simple_decorator/ConcreteComponent.java

@@ -0,0 +1,8 @@
+package learn.simple_decorator;
+
+public class ConcreteComponent implements Component {
+    @Override
+    public void operation() {
+        System.out.println("Concrete operation");
+    }
+}

src/learn/simple_decorator/ConcreteDecoratorA.java

@@ -0,0 +1,13 @@
+package learn.simple_decorator;
+
+public class ConcreteDecoratorA extends Decorator {
+    public ConcreteDecoratorA(Component component) {
+        super(component);
+    }
+
+    @Override
+    public void operation() {
+        System.out.println("I am adding some new responsibilities here.");
+        super.operation();
+    }
+}

src/learn/simple_decorator/ConcreteDecoratorB.java

@@ -0,0 +1,17 @@
+package learn.simple_decorator;
+
+public class ConcreteDecoratorB extends Decorator {
+    public ConcreteDecoratorB(Component component) {
+        super(component);
+    }
+
+    @Override
+    public void operation() {
+        addedBehavior();
+        super.operation();
+    }
+
+    private void addedBehavior() {
+        System.out.println("I am adding some new behavior here.");
+    }
+}

src/learn/simple_decorator/Decorator.java

@@ -0,0 +1,14 @@
+package learn.simple_decorator;
+
+public abstract class Decorator implements Component {
+    private Component component;
+
+    public Decorator(Component component) {
+        this.component = component;
+    }
+
+    @Override
+    public void operation() {
+        component.operation();
+    }
+}

src/learn/simple_decorator/Main.java

@@ -0,0 +1,11 @@
+package learn.simple_decorator;
+
+public class Main {
+    public static void main(String[] args) {
+        Component component = new ConcreteComponent();
+        component = new ConcreteDecoratorB(component);
+        component = new ConcreteDecoratorA(component);
+
+        component.operation();
+    }
+}