#Demo: Charlene's Coffee Corner
You'll notice I chose the well known Decorator design pattern. I think it's like an easier wa to extend functionallity over a pre existing product available in the coffee shop.
Instead of subclassing an having a subclass for each product, you can have a base product (i.e. coffee, roll or juice) and extend it with new extras (i.e. large, medium or small coffee or orange juice). What if tomorrow Charlene wants to offer a Strawberry juice? No worries. Just create a new decorator Strawberry class.
Finally, in order to print a ticket, I created a Ticket interface (and a default implementation), in order to add new elements and print them in the ticket format.
Make sure you have maven installed in your computer. If not, open your shell terminal and type:
sudo apt install mavenIf you already have it installed, and you wanna run this demo, just type the command below:
mvn compile && mvn exec:java -Dexec.mainClass="com.cognizant.demo.App"Once you execute it, you'll see a default ticket printed.
Here the sample of the code printed when executed.
