jgs CSE 460 Software Analysis and Design Lecture 19: Connecting the Dots Dr. Javier Gonzalez-Sanchez [email protected] javiergs.engineering.asu.edu | javiergs.com PERALTA 230U Office Hours: By appointment 

jgs 460 0010011 Announcement § Assignment 05 (Patterns) is due March 29. It opens at the end of the lecture 

jgs 460 0010011 Next 

jgs 460 0010011 Factory 

jgs 460 0010011 Using a Factory public class Client { public static void main(String[] args) { AbstractFactory shapeFactory = new ShapeFactory(); //get an object of Shape Rectangle Shape shape1 = shapeFactory.getShape("RECTANGLE"); //call draw method of Shape Rectangle shape1.draw(); //get an object of Shape Square Shape shape2 = shapeFactory.getShape("SQUARE"); //call draw method of Shape Square shape2.draw(); ] //get shape factory AbstractFactory shapeFactory1 = new RoundedShapeFactory(); //get an object of Shape Rectangle Shape shape3 = shapeFactory1.getShape("RECTANGLE"); //call draw method of Shape Rectangle shape3.draw(); //get an object of Shape Square Shape shape4 = shapeFactory1.getShape("SQUARE"); //call draw method of Shape Square shape4.draw(); } } 

jgs 460 0010011 Chain of Responsibility 

jgs 460 0010011 Using Chain of Responsibility // Setup Chain of Responsibility Handler h1 = new ConcreteHandler1(); Handler h2 = new ConcreteHandler2(); Handler h3 = new ConcreteHandler3(); h1.SetSuccessor(h2); h2.SetSuccessor(h3); // Generate and process request int[] requests = { 2, 5, 14, 22, 18, 3, 27, 20 }; foreach (int i=0; i

jgs 460 0010011 Decorator 

jgs 460 0010011 Using a Decorator class MainApp { static void main() { // Create ConcreteComponent and two Decorators ConcreteComponent c = new ConcreteComponent(); ConcreteDecoratorA d1 = new ConcreteDecoratorA(); ConcreteDecoratorB d2 = new ConcreteDecoratorB(); // Link decorators d1.SetComponent(c); d2.SetComponent(d1); d2.Operation(); } } 

jgs Adapter Convert the interface of a class into another interface clients expect 

jgs 460 0010011 Adapter 

jgs 460 0010011 Example RectangleAdapter + draw Rectangle + draw + draw 

jgs 460 0010011 Client public class Client { public static void main(String[] args) { Shape shape = new RectangleAdapter(new Rectangle(); int x1 = 10, y1 = 20; int x2 = 30, y2 = 60; shape.draw(x1, y1, x2, y2); } } 

jgs 460 0010011 Adapter class RectangleAdapter implements Shape { private Rectangle adaptee; public RectangleAdapter(Rectangle rectangle) { this.adaptee = rectangle; } public void draw(int x1, int y1, int x2, int y2) { int x = Math.min(x1, x2); int y = Math.min(y1, y2); int width = Math.abs(x2 - x1); int height = Math.abs(y2 - y1); adaptee.draw(x, y, width, height); } } 

jgs 460 0010011 Adaptee class Rectangle { public void draw(int x, int y, int width, int height) { System.out.println("Rectangle with coordinate left-down point”); } } 

jgs Assignment 04 Connecting the Dots 

jgs 460 0010011 Team 1 2 3 

jgs 460 0010011 Idea Main Factory Gift Ball Box Envelop 

jgs 460 0010011 Idea wrapper2 Main wrapper1 Factory decoration Envelope Box Gift wrapper3 ball Supervisor Is big > 10, box Is small < 5, envelop 

jgs 460 0010011 

jgs 460 0010011 Main 

jgs 460 0010011 Factory 

jgs 460 0010011 Chain of Responsibilities 

jgs 460 0010011 Decorator 

jgs 460 0010011 Decorator 

jgs 460 0010011 Observer 

jgs 460 0010011 

jgs CSE 460 Software Analysis and Design Javier Gonzalez-Sanchez [email protected] Fall 2020 Disclaimer. These slides can only be used as study material for the class CSE460 at ASU. They cannot be distributed or used for another purpose.