2015-10-04 03:06:11 +05:30
---
layout: pattern
title: MonoState
folder: monostate
permalink: /patterns/monostate/
categories: Creational
tags: Java
---
**Intent:** Enforces a behaviour like sharing the same state amongst all instances.
**Applicability:** Use the Monostate pattern when
* The same state must be shared across all instances of a class.
2015-10-09 23:20:58 +05:30
* Typically this pattern might be used everywhere a Singleton might be used. Singleton usage however is not transparent, Monostate usage is.
2015-10-04 03:06:11 +05:30
* Monostate has one major advantage over singleton. The subclasses might decorate the shared state as they wish and hence can provide dynamically different behaviour than the base class.
**Typical Use Case:**
* the logging class
* managing a connection to a database
* file manager
**Real world examples:**
Yet to see this.
