docs: Content SEO updates (#2990)

* update yaml frontmatter format

* update abstract document

* update abstract factory

* use the new pattern template

* acyclic visitor seo

* adapter seo

* ambassador seo

* acl seo

* aaa seo

* async method invocation seo

* balking seo

* bridge seo

* builder seo

* business delegate and bytecode seo

* caching seo

* callback seo

* chain seo

* update headings

* circuit breaker seo

* client session + collecting parameter seo

* collection pipeline seo

* combinator SEO

* command seo

* cqrs seo

* commander seo

* component seo

* composite seo

* composite entity seo

* composite view seo

* context object seo

* converter seo

* crtp seo

* currying seo

* dao seo

* data bus seo

* data locality seo

* data mapper seo

* dto seo

* decorator seo

* delegation seo

* di seo

* dirty flag seo

* domain model seo

* double buffer seo

* double checked locking seo

* double dispatch seo

* dynamic proxy seo

* event aggregator seo

* event-based asynchronous seo

* eda seo

* event queue seo

* event sourcing seo

* execute around seo

* extension objects seo

* facade seo

* factory seo

* factory kit seo

* factory method seo

* fanout/fanin seo

* feature toggle seo

* filterer seo

* fluent interface seo

* flux seo

* flyweight seo

* front controller seo

* function composition seo

* game loop seo

* gateway seo

* guarded suspension seo

* half-sync/half-async seo

* health check seo

* hexagonal seo

* identity map seo

* intercepting filter seo

* interpreter seo

* iterator seo

* layers seo

* lazy loading seo

* leader election seo

* leader/followers seo

* lockable object seo

* rename and add seo for marker interface

* master-worker seo

* mediator seo

* memento seo

* metadata mapping seo

* microservice aggregator seo

* api gw seo

* microservices log aggregration seo

* mvc seo

* mvi seo

* mvp seo

* mvvm seo

* monad seo

* monitor seo

* monostate seo

* multiton seo

* mute idiom seo

* naked objects & notification seo

* null object seo

* object mother seo

* object pool seo

* observer seo

* optimistic locking seo

* page controller seo

* page object seo

* parameter object seo

* partial response seo

* pipeline seo

* poison pill seo

* presentation model seo

* private class data seo

* producer-consumer seo

* promise seo

* property seo

* prototype seo

* proxy seo

* queue-based load leveling seo

* reactor seo

* registry seo

* repository seo

* RAII seo

* retry seo

* role object seo

* saga seo

* separated interface seo

* serialized entity seo

* serialized lob seo

* servant seo

* server session seo

* service layer seo

* service locator seo

* service to worker seo

* sharding seo

* single table inheritance seo

* singleton seo

* spatial partition seo

* special case seo

* specification seo

* state seo

* step builder seo

* strangler seo

* strategy seo

* subclass sandbox seo

* table module seo

* template method seo

* throttling seo

* tolerant reader seo

* trampoline seo

* transaction script seo

* twin seo

* type object seo

* unit of work seo

* update method seo

* value object seo

* version number seo

* virtual proxy seo

* visitor seo

* seo enhancements

* seo improvements

* SEO enhancements

* SEO improvements

* SEO additions

* SEO improvements

* more SEO improvements

* rename hexagonal + SEO improvements

* SEO improvements

* more SEO stuff

* SEO improvements

* SEO optimizations

* SEO enhancements

* enchance SEO

* improve SEO

* SEO improvements

* update headers
This commit is contained in:
Ilkka Seppälä
2024-06-08 19:54:44 +03:00
committed by GitHub
parent cb946c0cdc
commit 6cd2d0353a
219 changed files with 3308 additions and 2819 deletions
+19 -15
View File
@@ -1,23 +1,25 @@
---
title: Prototype
title: "Prototype Pattern in Java: Mastering Object Cloning for Efficient Instantiation"
shortTitle: Prototype
description: "Explore the Prototype design pattern in Java with a comprehensive guide on its implementation, advantages, and real-world applications. Learn how to efficiently clone objects and manage object creation in your Java applications."
category: Creational
language: en
tag:
- Gang Of Four
- Instantiation
- Object composition
- Polymorphism
- Gang Of Four
- Instantiation
- Object composition
- Polymorphism
---
## Also known as
* Clone
## Intent
## Intent of Prototype Design Pattern
The Prototype pattern is used to specify the kinds of objects to create using a prototypical instance, and create new objects by copying this prototype.
The Prototype pattern is used to specify the kinds of objects to create using a prototypical instance, and create new instances through object cloning.
## Explanation
## Detailed Explanation of Prototype Pattern with Real-World Examples
Real-world example
@@ -33,7 +35,7 @@ Wikipedia says
> The prototype pattern is a creational design pattern in software development. It is used when the type of objects to create is determined by a prototypical instance, which is cloned to produce new objects.
**Programmatic Example**
## Programmatic Example of Prototype Pattern in Java
In Java, the prototype pattern is recommended to be implemented as follows. First, create an interface with a method for cloning objects. In this example, `Prototype` interface accomplishes this with its `copy` method.
@@ -150,11 +152,11 @@ Here's the console output from running the example.
08:36:19.014 [main] INFO com.iluwatar.prototype.App -- Orcish wolf attacks with laser
```
## Class diagram
## Detailed Explanation of Prototype Pattern with Real-World Examples
![alt text](./etc/prototype.urm.png "Prototype pattern class diagram")
## Applicability
## When to Use the Prototype Pattern in Java
* When the classes to instantiate are specified at run-time, for example, by dynamic loading.
* To avoid building a class hierarchy of factories that parallels the class hierarchy of products.
@@ -162,16 +164,18 @@ Here's the console output from running the example.
* When object creation is expensive compared to cloning.
* When the concrete classes to instantiate are unknown until runtime.
## Known uses
## Real-World Applications of Prototype Pattern in Java
* In Java, the `Object.clone()` method is a classic implementation of the Prototype pattern.
* GUI libraries often use prototypes for creating buttons, windows, and other widgets.
* In game development, creating multiple objects (like enemy characters) with similar attributes.
## Consequences
## Benefits and Trade-offs of Prototype Pattern
Benefits:
Leveraging the Prototype pattern in Java applications
* Hides the complexities of instantiating new objects.
* Reduces the number of classes.
* Allows adding and removing objects at runtime.
@@ -181,13 +185,13 @@ Trade-offs:
* Requires implementing a cloning mechanism which might be complex.
* Deep cloning can be difficult to implement correctly, especially if the classes have complex object graphs with circular references.
## Related patterns
## Related Java Design Patterns
* [Abstract Factory](https://java-design-patterns.com/patterns/abstract-factory/): Both involve creating objects, but Prototype uses cloning of a prototype instance whereas Abstract Factory creates objects using factory methods.
* [Singleton](https://java-design-patterns.com/patterns/singleton/): Singleton can use a prototype for creating instances if it allows cloning of its single instance.
* [Composite](https://java-design-patterns.com/patterns/composite/): Prototypes are often used within composites to allow for dynamic creation of component trees.
## Credits
## References and Credits
* [Design Patterns: Elements of Reusable Object-Oriented Software](https://amzn.to/3w0pvKI)
* [Effective Java](https://amzn.to/4cGk2Jz)