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

Participants

• Target: defines the domain-specific interface that Client uses.
• Adapter: adapts the interface Adaptee to the Target interface.
• Adaptee: defines an existing interface that needs adapting.
• Client: collaborates with objects conforming to the Target interface.

Code

public class Main { public static void main(String[] args) { Target target = new Adapter(); target.request(); } } public interface Target { void request(); } public class Adapter implements Target { Adaptee adaptee = new Adaptee(); @Override public void request() { adaptee.specificRequest(); } } public class Adaptee { void specificRequest() { System.out.println("Called specificRequest()"); } } 

Output

Called specificRequest() 

Main Design Patterns

eidher ・ Sep 27 '20 ・ 1 min read

#designpatterns #creational #structural #behavioral