layout: pattern

title: Chain of responsibility

categories: Behavioral

language: en

tags:

- Gang of Four

Avoid coupling the sender of a request to its receiver by giving more than one object a chance to

handle the request. Chain the receiving objects and pass the request along the chain until an object

handles it.

In plain words

**Programmatic Example**

public class Request {

}

public class OrcKing {

}

var king = new OrcKing();

* You want to issue a request to one of several objects without specifying the receiver explicitly.

* The set of objects that can handle a request should be specified dynamically.

* [java.util.logging.Logger#log()](http://docs.oracle.com/javase/8/docs/api/java/util/logging/Logger.html#log%28java.util.logging.Level,%20java.lang.String%29)

* [Apache Commons Chain](https://commons.apache.org/proper/commons-chain/index.html)

<artifactId>java-design-patterns</artifactId>

<version>1.25.0-SNAPSHOT</version>

</parent>

<dependencies>

<dependency>

<groupId>org.junit.jupiter</groupId>

<module>facade</module>

<module>flyweight</module>

<module>proxy</module>

<module>command</module>

<module>interpreter</module>

<module>iterator</module>