Design pattern Adapter

Adapters in the Real World 

A real world analogy always helps with the understanding of a design pattern. The best example for the adapter pattern is based around AC power adapters. Say you're visiting Europe from the US, with your laptop, which expects a US power supply. To get your laptop plugged in, you're going to need to get a power adapter that accepts your US plug and allows it to plug in to the European power outlet. The AC adapter knows how to deal with both sides, acting as a middleman - this is the adapter pattern.

Convert the interface of a class into another interface clients expect. Adapter lets classes work together that couldn't otherwise because of incompatible interfaces.

The Adapter Pattern

The Adapter is known as a structural pattern,as it's used to identifying a simple way to realize relationships between entities. Thedefinition of Adapter provided in the original Gang of Four book on DesignPatterns states: 

The Target interface defines the domain specific interface that the Client used, so the client collaborates with objects that implement the Target interface. On the other side of things, the Adaptee is the existing interface that needs adapting in order for our client to interact with it. The Adapter adapts the Adaptee to the Target interface - in other words, it translates the request from the client to the adaptee. 

Realtime:

• java.util.Arrays#asList()

Reference: https://dzone.com/articles/design-patterns-uncovered-0

https://www.javacodegeeks.com/2015/09/adapter-design-pattern.html

All design patterns : https://www.youtube.com/watch?v=0jjNjXcYmAU