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Javaๅฎž็Žฐ็š„่ฎพ่ฎกๆจกๅผ

่ถ‹ๅŠฟ

Design Patterns Implemented in Java

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Introduction

Design patterns are the best, formalized practices a programmer can use to solve common problems when designing an application or system.

Design patterns can speed up the development process by providing tested, proven development paradigms.

Reusing design patterns helps prevent subtle issues that cause major problems, and it also improves code readability for coders and architects who are familiar with the patterns.

Getting Started

This site showcases Java Design Patterns. The solutions have been developed by experienced programmers and architects from the open-source community. The patterns can be browsed by their high-level descriptions or by looking at their source code. The source code examples are well commented and can be thought of as programming tutorials on how to implement a specific pattern. We use the most popular battle-proven open-source Java technologies.

Before you dive into the material, you should be familiar with various Software Design Principles.

All designs should be as simple as possible. You should start with KISS, YAGNI, and Do The Simplest Thing That Could Possibly Work principles. Complexity and patterns should only be introduced when they are needed for practical extensibility.

Once you are familiar with these concepts you can start drilling down into the available design patterns by any of the following approaches:

  • Search for a specific pattern by name. Can't find one? Please report a new pattern here.
  • Using tags such as Performance, Gang of Four or Data access.
  • Using pattern categories, Creational, Behavioral, and others.

Hopefully, you find the object-oriented solutions presented on this site useful in your architectures and have as much fun learning them as we had while developing them.

How to Contribute

If you are willing to contribute to the project you will find the relevant information in our developer wiki. We will help you and answer your questions in the Gitter chatroom.

The Book

The design patterns are now available as an e-book. Find out more about "Open Source Java Design Patterns" here: https://payhip.com/b/kcaF9

The project contributors can get the book for free. Contact the maintainer via Gitter chatroom or email (iluwatar (at) gmail (dot) com ). Send a message that contains your email address, Github username, and a link to an accepted pull request.

License

This project is licensed under the terms of the MIT license.

Contributors

Ilkka Seppรคlรค
Ilkka Seppรคlรค

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Subhrodip Mohanta
Subhrodip Mohanta

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amit1307
amit1307

๐Ÿ’ป
Narendra Pathai
Narendra Pathai

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Jeroen Meulemeester
Jeroen Meulemeester

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Joseph McCarthy
Joseph McCarthy

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Thomas
Thomas

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Anurag Agarwal
Anurag Agarwal

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Markus Moser
Markus Moser

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Sabiq Ihab
Sabiq Ihab

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Amit Dixit
Amit Dixit

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Piyush Kailash Chaudhari
Piyush Kailash Chaudhari

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joshzambales
joshzambales

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Kamil Pietruszka
Kamil Pietruszka

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Zafar Khaydarov
Zafar Khaydarov

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Paul Campbell
Paul Campbell

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Argyro Sioziou
Argyro Sioziou

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TylerMcConville
TylerMcConville

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saksham93

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Colin But

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Ruslan

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Juho Kang
Juho Kang

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Dheeraj Mummareddy

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Bernardo Sulzbach

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Aleksandar Dudukovic

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Yusuf AytaลŸ

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Mihรกly Kuprivecz

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Stanislav Kapinus

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Harshraj Thakor

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Martin Vandenbussche

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Alexandru Somai

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Artur Mogozov

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anthony
anthony

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Christian Cygnus

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Dima Gubin

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Joshua Jimenez

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Kai Winter

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lbroman
lbroman

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Przemek

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Prafful Agarwal

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Sanket Panhale
Sanket Panhale

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staillebois
staillebois

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Krisztiรกn Nagy
Krisztiรกn Nagy

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Alexander Ivanov
Alexander Ivanov

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Yosfik Alqadri

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Agustรญ Becerra Milร 
Agustรญ Becerra Milร 

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Juan Manuel Suรกrez
Juan Manuel Suรกrez

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Luigi Cortese
Luigi Cortese

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Katarzyna Rzepecka

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adamski.pro

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Shengli Bai

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Boris

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Dmitry Avershin

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้ณ้˜ณ

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hoangnam2261

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Arpit Jain

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Jรณn Ingi Sveinbjรถrnsson

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Kirill Vlasov

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Mitchell Irvin

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Ranjeet

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PhoenixYip

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M Saif Asif

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kanwarpreet25

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Leon Mak

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Per Wramdemark

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Evan Sia Wai Suan

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AnaghaSasikumar

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Christoffer Hamberg

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Dominik Gruntz

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Hannes
Hannes

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Leo Gutiรฉrrez Ramรญrez

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Zhang WH
Zhang WH

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Christopher O'Connell

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George Mavroeidis

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Hemant Bothra

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Kevin Peters
Kevin Peters

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George Aristy

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Mahendran Mookkiah

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Azureyjt

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gans

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Matt
Matt

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Gopinath Langote

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Hoswey

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Amit Pandey

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gwildor28

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Stamatis Pitsios

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qza

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Rodolfo Forte

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Ankur Kaushal

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Ovidijus Okinskas

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Robert Kasperczyk

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Tapio Rautonen

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Yuri Orlov

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Varun Upadhyay

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Sivasubramani M

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Sami Airaksinen

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Janne Sinivirta

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Boris-Chengbiao Zhou
Boris-Chengbiao Zhou

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Jacob Hein
Jacob Hein

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Richard Jones
Richard Jones

๐Ÿ–‹
Rachel M. Carmena
Rachel M. Carmena

๐Ÿ–‹
Zaerald Denze Lungos
Zaerald Denze Lungos

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Lars Kappert

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Mike Liu
Mike Liu

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Matt Dolan
Matt Dolan

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Manan
Manan

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Nishant Arora
Nishant Arora

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Akash Chandwani

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Ibrahim ali abdelghany

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Omar Karazoun

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KHADIR Tayeb

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Victor He

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Tejas Singh

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Vinรญcius A. B.

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Stefanel Stan

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Prince bhati

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Shogo Hida

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Eugene

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Piyush

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Rahul Raj

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Saiteja Reddy

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Enrique Clerici

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Ramil Sayetov

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Fredrik Sejr

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Allagadda Sai Upendranath

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Sam Powell

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่ต„ๆทฑ่€่Œๆ–ฐ

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Seunghwan Jeon
Seunghwan Jeon

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sugavanesh

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FinnS-F
FinnS-F

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jerryyummy
jerryyummy

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Manoj Chowdary
Manoj Chowdary

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Aditya
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๐Ÿ“– ๐Ÿ’ป
nooynayr
nooynayr

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CYBERCRUX2
CYBERCRUX2

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Luis Mateo Hincapiรฉ Martinez
Luis Mateo Hincapiรฉ Martinez

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guqing
guqing

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Sashir Estela
Sashir Estela

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omahs
omahs

๐Ÿ“–
leif e.
leif e.

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Jun Kang
Jun Kang

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Kishalay Pandey
Kishalay Pandey

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drishtii7
drishtii7

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David Medina Orozco
David Medina Orozco

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Roman Leontev
Roman Leontev

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Riley
Riley

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k1w1dev
k1w1dev

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dev-yugantar
dev-yugantar

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Adelya
Adelya

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gatlanagaprasanna
gatlanagaprasanna

๐Ÿ“–
Avinash Shukla
Avinash Shukla

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Mayank Choudhary
Mayank Choudhary

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romannimets
romannimets

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Joel
Joel

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Walyson Moises
Walyson Moises

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Xcyq
Xcyq

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Ritabrata
Ritabrata

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Trivikram Kamat
Trivikram Kamat

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Vincent Vanghelle
Vincent Vanghelle

๐ŸŒ
Antoine Hรฉritier
Antoine Hรฉritier

๐ŸŒ
QinShower
QinShower

๐ŸŒ
LakshyaPunyani-01
LakshyaPunyani-01

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jasonjyu
jasonjyu

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jeffmorrison
jeffmorrison

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David M.
David M.

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Patrick Kleindienst
Patrick Kleindienst

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Juyeon
Juyeon

๐ŸŒ
Mammad Yahyayev
Mammad Yahyayev

๐Ÿ“–
Salma
Salma

๐Ÿ’ป
Arpit Sarang
Arpit Sarang

๐Ÿ’ป
Maya
Maya

๐ŸŒ
ๅ…ณไบŽ
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