GV

GeezerVison

The World Wide Web, restored to 800 pixels of glory.

Home|About|Gaming cabinet|Archives|How it works|Starter sites

On this site

  • Sign in
  • ActionsCI/CD and automation
  • CodespacesCloud development environments
  • All Features
  • Documentation
  • Training
  • Certifications
  • Build with Copilot
  • Customize Copilot
  • Integrations
  • Trending repos
  • GitHub Sponsors
  • Developer articles
  • Enterprises

This view

  • Original page
  • New address

GeezerVison is showing github.com — DesignPattern/Java/value-object at master · feixiao/DesignPattern

Expand file tree

/

value-object

/
Copy path

Directory actions

More options

More options

Directory actions

More options

More options

Latest commit

 

History

History
History
/

value-object

/
Copy path

Folders and files

NameName
Last commit message
Last commit date

parent directory

..
etc
etc
 
 
src
src
 
 
README.md
README.md
 
 
pom.xml
pom.xml
 
 

README.md

Outline
layout pattern
title Value Object
folder value-object
permalink /patterns/value-object/
pumlid LSZ13SCm20NGLTe1RExTXX2KECBOmfza_VRQszDxDnVBNJFiTG9pVOY2dteqdBdbqf3XK4ULqQbPFWmEklZcikjgXvV9W8Olwhn-e9ijjOpjKW4fv2zgHgypktq1
categories Creational
tags
Java
Difficulty-Beginner

Intent

Provide objects which follow value semantics rather than reference semantics. This means value objects' equality are not based on identity. Two value objects are equal when they have the same value, not necessarily being the same object.

alt text

Applicability

Use the Value Object when

  • you need to measure the objects' equality based on the objects' value

Real world examples

  • java.util.Optional
  • java.time.LocalDate
  • joda-time, money, beans

Credits

  • Patterns of Enterprise Application Architecture
  • VALJOs - Value Java Objects : Stephen Colebourne's blog
  • Value Object : Wikipedia
You are visitor 01402503 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.