/**

* Adapter patterns comes under structural pattern as it deals with how classes are interacting.

* As name suggests adapter pattern is used adapt two different incompatible system.

*

* Adapter pattern also helps and be connector between your system and some third party or legacy system.

* For example your system expects data in one format to process and third party sends in one format.

* Example : Consider you have to invoke some third party soap service which is xml base however your system is built on JSON

* with some advanced fields at that time you create JSON-to-XML adapter which will help to interact with thirdparty.

* Adapter pattern can be achieved in two ways :

* 1. Class Level: class level mean to adapt something you are extending and doing inheritance of that class.

* 2. Object level : Object level mean you keep has-a relationship with class rather doing tight coupling in system.

*

* One of the example is we know java supports both array and list to store data. Now you have legacy system

* which is using array and you want to use collection functionalities to do so we have to convert, so Arrays.asList work as adaper

* between array to list and then use collections.

*

* A java.io.InputStreamReader translates a byte stream into a character stream, and a java.io.OutputStreamWriter translates a character stream into a byte stream. These classes exemplify the Adapter pattern.

* In particular, they change input/output stream interfaces to the required reader/writer interfaces

* https://cecs.wright.edu/~tkprasad/courses/ceg860/paper/node26.html

*

* In this example we will see that Swiggy is selling food products now suddenly lockdown arise

* and they thought to provide service of delivering grocery items for sometime so they write adapter which

* helps them to convert similar to food item without touching their food delivery business.

*

* https://www.javadevjournal.com/java-design-patterns/adapter-design-pattern/

*

* Reference : https://www.programmergirl.com/java-adapter-pattern/

*/

public class Main {

public static void main(String[] args) {

SwiggyStore swiggyStore = new SwiggyStore();

swiggyStore.addItems(new FoodItem());

swiggyStore.addItems(new FoodItem());

//Adapter grocery which was incompatible with food.

swiggyStore.addItems(new GroceryItemAdapter(new GroceryProduct()));

}

}