Use Of Adapter Design Pattern In Java

Class diagram of class adapter pattern.

Use of adapter design pattern in java. Adapter class makes classes with incompatible interfaces work together adapter design pattern is a structural design pattern among the gang of four gof article on gof patterns their types design patterns. This article explains adapter design pattern in java with class diagrams and example code. If you want to read the system input through command prompt in java then given below code is common way to do it. Where to use adapter design pattern.

The main use of this pattern is when a class that you need to use doesn t meet the requirements of an interface. The adapter pattern deals with how the classes are composed to form larger. The adapter pattern is widely known in software development and used in many programming languages e g java. In software engineering the adapter pattern is a software design pattern that allows the interface of an existing class to be used as another interface.

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. Since multiple inheritance is not supported by many languages including java and is associated with many problems we have not shown implementation using class adapter pattern. Adapter pattern example 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. Adapter design pattern example in jdk.

Here instead of having an adaptee object inside adapter composition to make use of its functionality adapter inherits the adaptee. Adapter pattern works as a bridge between two incompatible interfaces. The main intention of the adapter pattern is to make two incompatible interfaces compatible so that two different systems can inter communicate. The adapter pattern describes how to convert an object into another object which a clients expects.

The underlying classes or objects will not change but there is. This pattern involves a single class which is responsible to join functionalities of independent or incompatible interfaces. Two different systems have completely different interfaces to communicate with outside. Some of the adapter design pattern example i could easily find in jdk classes are.

Adapter design pattern class diagram. 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. Adapter pattern lets you wrap an otherwise incompatible object in an adapter to make it compatible with another class.