27 lines
637 B
Markdown
Raw Permalink Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

---
layout: pattern
title: Twin
folder: twin
permalink: /patterns/twin/
categories: Structural
tags:
- Extensibility
---
## Intent
Twin pattern is a design pattern which provides a standard solution to simulate multiple
inheritance in java
## Class diagram
![alt text](./etc/twin.png "Twin")
## Applicability
Use the Twin idiom when
* To simulate multiple inheritance in a language that does not support this feature.
* To avoid certain problems of multiple inheritance such as name clashes.
## Credits
* [Twin A Design Pattern for Modeling Multiple Inheritance](http://www.ssw.uni-linz.ac.at/Research/Papers/Moe99/Paper.pdf)