Adaptor Pattern How To Use

Now we need to use the same app for our client in the uk that wants the same results but in kilometers per hour km h.

Adaptor pattern how to use. In software engineering the adapter pattern is a software design pattern also known as wrapper an alternative naming shared with the decorator pattern that allows the interface of an existing class to be used as another interface. My primary use of the adapter pattern would be to create wrappers for a framework class that doesn t implement an interface. A socket attaches to a ratchet provided that the size of the drive is the. The adapter pattern lets you create a middle layer class that serves as a translator between your code and a legacy class a 3rd party class or any other class with a weird interface.

An example is an adapter that converts the interface of a. Probably everyone have seen some adapters for memory cards. The adapter pattern is adapting between classes and objects. Like any adapter in the real world it is used to be an interface a bridge between two objects.

We have a mediaplayer interface and a concrete class audioplayer implementing the mediaplayer interface. We are demonstrating use of adapter pattern via following example in which an audio player device can play mp3 files only and wants to use an advanced audio player capable of playing vlc and mp4 files. In real world we have adapters for power supplies adapters for camera memory cards and so on. The adapter pattern we have implemented above is called object adapter pattern because the adapter holds an instance of adaptee.

The net optimized code demonstrates the same real world situation as above but uses modern built in net features such as generics reflection object initializers automatic properties etc. Socket wrenches provide an example of the adapter. The adapter pattern allows otherwise incompatible classes to work together by converting the interface of one class into an interface expected by the clients. This tutorial demonstrates how to use the adapter pattern in java focusing on use cases and types of adapters class object and two ways adapter patterns.

Consider a scenario in which there is an app that s developed in the us which returns the top speed of luxury cars in miles per hour mph. It is often used to make existing classes work with others without modifying their source code. You can find an example on our singleton pattern page. The adapter pattern is usually used when you don t have control over the target class.

Say i want to mock out a framework class which doesn t implement an interface and doesn t have virtual methods. Use the pattern when you want to reuse several existing subclasses that lack some common functionality that can t be added to the superclass. The adapter could also be thought of as a wrapper.