iluwatar/java-design-patterns

Design pattern samples implemented in Java

xiaoming222s

@xiaoming222s

都是外国人》

I am cainiao

Aml Mohamed Sakr

@Amlsakr

I am A ml

I want to learn how to write clean code
I want suggestion to open source project which I can contribute .
I want the project to be in middle level

santoshkumarRK

@santoshkumarRK

I would like to improve my code quality and along with design skills

Sachin Mukherjee

@sachinmukherjee

Are tags like beginner-only, expert tags in difficulty level are removed?

Ilkka Seppälä

@iluwatar

Yes, they were removed in iluwatar/java-design-patterns-web#8

lttechpro

@lttechpro_gitlab

where or how is java design more operative function or used

i mean the patterns

Majid Hajric

@MajidHajric

Hi all,
just got idea how I will make repo for patterns, ng on the front, quiz, step by step explanation...and I find out that there is a repo already :)
Is there something I can do?

Ilkka Seppälä

@iluwatar

We have many open issues needing help. Additionally I'm very interested to hear your ideas.

Majid Hajric

@MajidHajric

Thanks @iluwatar.
I think you did excellent job by creating this project and making implementation of each pattern in one place.
Basically my idea is to provide interactive UI for beginners as well as engineers already using patterns/antipatterns :)
So, something like this:

step by step trough: challenge what pattern solves -> detail explanation how to implement -> optionally go to source -> checkpoint with some questions -> compare with related patterns, etc
extend repo with:
principles and best practices,
refactoring guide
...
maybe with some kind of general knowledge check, with questions yes/no, pick one, etc

Don't want you misunderstand me, but when I see what is in the repo - I am scared of such a huge list :D

Majid Hajric

@MajidHajric

Goal: make this place a holy place for patterns :)

RudolfBun

@RudolfBun

Hi all,
I study informatics at University of Szeged and me and my group mates (other 4 people) got a task
to contribute into java-design-patterns

I have a question for you. We are thinking about taking some issues from the github repo, and are there some kind of that you can recommend for us? We think that implementing a few patterns will be a good idea. Do you know some kind of pattern, which can be easier to understand and implement?

We would need fast response, because we would need to choice issues today.

Ilkka Seppälä

@iluwatar

Sorry for my slow response times, guys. I've been drowning to work lately.

@MajidHajric you have great ideas there to take the project to the next level. I would like to discuss it further with you if you are willing to take part in the implementation as well?

@RudolfBun start by reading the information in wiki https://github.com/iluwatar/java-design-patterns/wiki/01.-How-to-contribute and then browse the issue list https://github.com/iluwatar/java-design-patterns/issues. The ones with "help wanted" label are looking for implementors and the ones with "good first issue" may be easier to start with.

Lrn Lru

@lrny-lru

Hi, I'm a beginner. I'm teaching myself Java and I really like your tutorial- I can't figure out how to use your difficulty tags to find what principles to start with? ^^; I want to find principles that are Difficulty-beginner

Oh I meant Patterns, lol

Ilkka Seppälä

@iluwatar

The difficulty tags have been removed in the last update of categories and tags. The ones that are currently in use are documented here https://github.com/iluwatar/java-design-patterns/wiki/07.-Categories-and-Tags

Munish Sharna

@munish-usit

Hi, I want to contribute to the project. Any help on what could be the starting point?

Ilkka Seppälä

@iluwatar

Hi @munish-usit

Find something to do in the issue list https://github.com/iluwatar/java-design-patterns/issues or create your own issue
General information is available in the wiki https://github.com/iluwatar/java-design-patterns/wiki

baobaoyeye

@baobaoyeye

hi, is there any plan to translate relevant contents into Chinese

syed

@Smssyed8

Hi Just cloned the project, imported as maven project in eclipse

facing build issues

Multiple annotations found at this line:

- Plugin execution not covered by lifecycle configuration: com.iluwatar.urm:urm-maven-
 plugin:1.4.8:map (execution: default, phase: process-classes)
- Plugin execution not covered by lifecycle configuration: org.commonjava.maven.plugins:directory-
 maven-plugin:0.3.1:directory-of (execution: directories, phase: initialize)

syed

@Smssyed8

Ilkka Seppälä

@iluwatar

@kkond Producer and Consumer do not implement Runnable, but they are not used directly by the executor service. There's a lambda expression that wraps those classes if you look carefully

Ilkka Seppälä

@iluwatar

@syed if it doesn't work in Eclipse according to the instructions, please create a new issue https://github.com/iluwatar/java-design-patterns/wiki/12.-IDE-instructions

syed

@Smssyed8

@iluwatar Hi, I have raised, iluwatar/java-design-patterns#1243 issue for this

thank you

Rakesh

@ravening

didnt face that issue in vscode on intellij

venkatrs-ch197

@venkatrs-ch197

Hi All
Could you please let me know how can I update my fork repository?
I tried to merge with upstream but getting like this

syed

@Smssyed8

didnt face that issue in vscode on intellij

that's great, I am not sure why I am facing it

I see, there is a change, may be marked by @iluwatar

venkatrs-ch197

@venkatrs-ch197

Hi All
Could you please let me know how can I update my fork repository?
I tried to merge with upstream but getting like this

I got it. Updated my Fork repo.

Ilkka Seppälä

@iluwatar

On the CI front we are moving from Travis to Github Actions. This has already been implemented in java-design-patterns repository.

Manish A.Shetty

@ManishShetty1

Hi guys, what’s the design pattern to load the cache only once during the startup?

pawarashish564

@pawarashish564

I'm working on a java compiler API to create a new extension as AutoCompiler which will solve all compile time error automatically without manually looking into the code.
See this here https://github.com/pawarashish564/AutoCompiler new contributors are always welcomed.

sounakadhikary

@sounakadhikary

Hi All

Ilkka Seppälä

@iluwatar

We are starting work on internationalization of the repo, see issue iluwatar/java-design-patterns#1245

If you're interested in translating content to your own language please get in touch.

Timur Isachenko

@isatimur

If you're interested in translating content to your own language please get in touch.

wow, how you did it, I wanted to ask for the same feature, maybe git book mechanics will afford it? I could help with a Russian translation if it's appropriate.

Ilkka Seppälä

@iluwatar

@isatimur in the first phase we are working on translations in https://gitlocalize.com/ If you want, I can add you as a moderator for Russian language. This enables you to start translating immediately.

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