René's URL Explorer Experiment

Title: History for null-object/src - siberiwolf/java-design-patterns · GitHub

Open Graph Title: History for null-object/src - siberiwolf/java-design-patterns

X Title: History for null-object/src - siberiwolf/java-design-patterns

Description: Design patterns implemented in Java. Contribute to siberiwolf/java-design-patterns development by creating an account on GitHub.

Open Graph Description: Design patterns implemented in Java. Contribute to siberiwolf/java-design-patterns development by creating an account on GitHub.

X Description: Design patterns implemented in Java. Contribute to siberiwolf/java-design-patterns development by creating an account on GitHub.

Opengraph URL: https://github.com/siberiwolf/java-design-patterns

X: @github

direct link

Domain: github.com

route-pattern	/:user_id/:repository/commits(/*name)
route-controller	commits
route-action	show
fetch-nonce	v2:25914201-f864-6069-26b6-d6cfb9655d38
current-catalog-service-hash	f3abb0cc802f3d7b95fc8762b94bdcb13bf39634c40c357301c4aa1d67a256fb
request-id	EBD0:22C843:296614:375A5A:6A616E04
html-safe-nonce	1889cd84ea290ef58a2563bffca20fa5ceffe4795c1335957ed79016e6bdded1
visitor-payload	eyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJFQkQwOjIyQzg0MzoyOTY2MTQ6Mzc1QTVBOjZBNjE2RTA0IiwidmlzaXRvcl9pZCI6IjczMzM4ODU4MTc2ODQ4NDgxMzIiLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmac	4c3b809bb7e93261fe1dc54f710c8f60763691895932337342dedac37385c764
hovercard-subject-tag	repository:102728809
github-keyboard-shortcuts	repository,commit-list,copilot
google-site-verification	Apib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-url	https://collector.github.com/github/collect
analytics-location	///commits/show
fb:app_id	1401488693436528
apple-itunes-app	app-id=1477376905, app-argument=https://github.com/siberiwolf/java-design-patterns/commits/java9/null-object/src
twitter:image	https://opengraph.githubassets.com/a296a7f854507f628ce591838a536d4fa47f8787d2d19874cb4fa5f77d26a70e/siberiwolf/java-design-patterns
twitter:card	summary_large_image
og:image	https://opengraph.githubassets.com/a296a7f854507f628ce591838a536d4fa47f8787d2d19874cb4fa5f77d26a70e/siberiwolf/java-design-patterns
og:image:alt	Design patterns implemented in Java. Contribute to siberiwolf/java-design-patterns development by creating an account on GitHub.
og:image:width	1200
og:image:height	600
og:site_name	GitHub
og:type	object
hostname	github.com
expected-hostname	github.com
None	a69385f7d268ece7ad25b131bbd70f457024811fc79afcae43785a6849b724e2
turbo-cache-control	no-cache
go-import	github.com/siberiwolf/java-design-patterns git https://github.com/siberiwolf/java-design-patterns.git
octolytics-dimension-user_id	3395485
octolytics-dimension-user_login	siberiwolf
octolytics-dimension-repository_id	102728809
octolytics-dimension-repository_nwo	siberiwolf/java-design-patterns
octolytics-dimension-repository_public	true
octolytics-dimension-repository_is_fork	true
octolytics-dimension-repository_parent_id	22790488
octolytics-dimension-repository_parent_nwo	iluwatar/java-design-patterns
octolytics-dimension-repository_network_root_id	22790488
octolytics-dimension-repository_network_root_nwo	iluwatar/java-design-patterns
turbo-body-classes	logged-out env-production page-responsive
disable-turbo	false
browser-stats-url	https://api.github.com/_private/browser/stats
browser-errors-url	https://api.github.com/_private/browser/errors
release	484cf265a1f970d5c7a5e7c37cb677d8010aa12f
ui-target	full
theme-color	#1e2327
color-scheme	light dark

Links:

Skip to content	https://github.com/siberiwolf/java-design-patterns/commits/java9/null-object/src#start-of-content
	https://github.com/
Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fsiberiwolf%2Fjava-design-patterns%2Fcommits%2Fjava9%2Fnull-object%2Fsrc
GitHub CopilotWrite better code with AI	https://github.com/features/copilot
GitHub Copilot appDirect agents from issue to merge	https://github.com/features/ai/github-app
MCP RegistryNewIntegrate external tools	https://github.com/mcp
ActionsAutomate any workflow	https://github.com/features/actions
CodespacesInstant dev environments	https://github.com/features/codespaces
IssuesPlan and track work	https://github.com/features/issues
Code ReviewManage code changes	https://github.com/features/code-review
Code QualityEnforce quality at merge	https://github.com/features/code-quality
GitHub Advanced SecurityFind and fix vulnerabilities	https://github.com/security/advanced-security
Code securitySecure your code as you build	https://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they start	https://github.com/security/advanced-security/secret-protection
Why GitHub	https://github.com/why-github
Documentation	https://docs.github.com
Blog	https://github.blog
Changelog	https://github.blog/changelog
Marketplace	https://github.com/marketplace
View all features	https://github.com/features
Enterprises	https://github.com/enterprise
Small and medium teams	https://github.com/team
Startups	https://github.com/enterprise/startups
Nonprofits	https://github.com/solutions/industry/nonprofits
App Modernization	https://github.com/solutions/use-case/app-modernization
DevSecOps	https://github.com/solutions/use-case/devsecops
DevOps	https://github.com/solutions/use-case/devops
CI/CD	https://github.com/solutions/use-case/ci-cd
View all use cases	https://github.com/solutions/use-case
Healthcare	https://github.com/solutions/industry/healthcare
Financial services	https://github.com/solutions/industry/financial-services
Manufacturing	https://github.com/solutions/industry/manufacturing
Government	https://github.com/solutions/industry/government
View all industries	https://github.com/solutions/industry
View all solutions	https://github.com/solutions
AI	https://github.com/resources/articles?topic=ai
Software Development	https://github.com/resources/articles?topic=software-development
DevOps	https://github.com/resources/articles?topic=devops
Security	https://github.com/resources/articles?topic=security
View all topics	https://github.com/resources/articles
Customer stories	https://github.com/customer-stories
Events & webinars	https://github.com/resources/events
Ebooks & reports	https://github.com/resources/whitepapers
Business insights	https://github.com/solutions/executive-insights
GitHub Skills	https://skills.github.com
Documentation	https://docs.github.com
Customer support	https://support.github.com
Community forum	https://github.com/orgs/community/discussions
Trust center	https://github.com/trust-center
Partners	https://github.com/partners
View all resources	https://github.com/resources
GitHub SponsorsFund open source developers	https://github.com/open-source/sponsors
Security Lab	https://securitylab.github.com
Maintainer Community	https://maintainers.github.com
Accelerator	https://github.com/open-source/accelerator
GitHub Stars	https://stars.github.com
Archive Program	https://archiveprogram.github.com
Topics	https://github.com/topics
Trending	https://github.com/trending
Collections	https://github.com/collections
Enterprise platformAI-powered developer platform	https://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security features	https://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI features	https://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 support	https://github.com/enterprise/premium-support
Pricing	https://github.com/pricing
Search syntax tips	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentation	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fsiberiwolf%2Fjava-design-patterns%2Fcommits%2Fjava9%2Fnull-object%2Fsrc
Sign up	https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fcommits%2Fshow&source=header-repo&source_repo=siberiwolf%2Fjava-design-patterns
Reload	https://github.com/siberiwolf/java-design-patterns/commits/java9/null-object/src
Reload	https://github.com/siberiwolf/java-design-patterns/commits/java9/null-object/src
Reload	https://github.com/siberiwolf/java-design-patterns/commits/java9/null-object/src
siberiwolf	https://github.com/siberiwolf
java-design-patterns	https://github.com/siberiwolf/java-design-patterns
iluwatar/java-design-patterns	https://github.com/iluwatar/java-design-patterns
Notifications	https://github.com/login?return_to=%2Fsiberiwolf%2Fjava-design-patterns
Fork 0	https://github.com/login?return_to=%2Fsiberiwolf%2Fjava-design-patterns
Star 0	https://github.com/login?return_to=%2Fsiberiwolf%2Fjava-design-patterns
Code	https://github.com/siberiwolf/java-design-patterns/tree/java9
Pull requests 0	https://github.com/siberiwolf/java-design-patterns/pulls
Actions	https://github.com/siberiwolf/java-design-patterns/actions
Projects	https://github.com/siberiwolf/java-design-patterns/projects
Wiki	https://github.com/siberiwolf/java-design-patterns/wiki
Security and quality 0	https://github.com/siberiwolf/java-design-patterns/security
Insights	https://github.com/siberiwolf/java-design-patterns/pulse
Code	https://github.com/siberiwolf/java-design-patterns/tree/java9
Pull requests	https://github.com/siberiwolf/java-design-patterns/pulls
Actions	https://github.com/siberiwolf/java-design-patterns/actions
Projects	https://github.com/siberiwolf/java-design-patterns/projects
Wiki	https://github.com/siberiwolf/java-design-patterns/wiki
Security and quality	https://github.com/siberiwolf/java-design-patterns/security
Insights	https://github.com/siberiwolf/java-design-patterns/pulse
java-design-patterns	https://github.com/siberiwolf/java-design-patterns/commits
null-object	https://github.com/siberiwolf/java-design-patterns/commits/java9/null-object
src	https://github.com/siberiwolf/java-design-patterns/commits/java9/null-object/src
java9	https://github.com/siberiwolf/java-design-patterns/tree/java9
Update license headers	https://github.com/siberiwolf/java-design-patterns/commit/faa29f8025f6fb90472dacb6e8ad8569605f8d61
	https://github.com/iseppala
iseppala	https://github.com/siberiwolf/java-design-patterns/commits?author=iseppala
faa29f8	https://github.com/siberiwolf/java-design-patterns/commit/faa29f8025f6fb90472dacb6e8ad8569605f8d61
	https://github.com/siberiwolf/java-design-patterns/blob/faa29f8025f6fb90472dacb6e8ad8569605f8d61/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/faa29f8025f6fb90472dacb6e8ad8569605f8d61
#502 Adjusted tests for logger introduction	https://github.com/siberiwolf/java-design-patterns/commit/e138163c4f1688678dc8bc43e9683b142d534fe7
e138163	https://github.com/siberiwolf/java-design-patterns/commit/e138163c4f1688678dc8bc43e9683b142d534fe7
	https://github.com/siberiwolf/java-design-patterns/blob/e138163c4f1688678dc8bc43e9683b142d534fe7/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/e138163c4f1688678dc8bc43e9683b142d534fe7
#502 Replaced usages of System.out with logger.	https://github.com/siberiwolf/java-design-patterns/commit/0438811489c16948ad8418e9a3ce59bc10bd92c6
0438811	https://github.com/siberiwolf/java-design-patterns/commit/0438811489c16948ad8418e9a3ce59bc10bd92c6
	https://github.com/siberiwolf/java-design-patterns/blob/0438811489c16948ad8418e9a3ce59bc10bd92c6/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/0438811489c16948ad8418e9a3ce59bc10bd92c6
Merge pull request #376 from DevFactory/release/Classes-without-public-constructors-should-be-final-fix-1	https://github.com/siberiwolf/java-design-patterns/commit/823dc6395fbba21d77d793ac8997381b045824e9
	https://github.com/npathai
npathai	https://github.com/siberiwolf/java-design-patterns/commits?author=npathai
823dc63	https://github.com/siberiwolf/java-design-patterns/commit/823dc6395fbba21d77d793ac8997381b045824e9
	https://github.com/siberiwolf/java-design-patterns/blob/823dc6395fbba21d77d793ac8997381b045824e9/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/823dc6395fbba21d77d793ac8997381b045824e9
squid:S2974 - Classes without public constructors should be final	https://github.com/siberiwolf/java-design-patterns/commit/632174b6dc5f36a38b2fcb072166bef0c8358358
632174b	https://github.com/siberiwolf/java-design-patterns/commit/632174b6dc5f36a38b2fcb072166bef0c8358358
	https://github.com/siberiwolf/java-design-patterns/blob/632174b6dc5f36a38b2fcb072166bef0c8358358/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/632174b6dc5f36a38b2fcb072166bef0c8358358
squid:S1186 - Methods should not be empty	https://github.com/siberiwolf/java-design-patterns/commit/df4a40fc1338c9bc7ecc7cde6343c832423228df
df4a40f	https://github.com/siberiwolf/java-design-patterns/commit/df4a40fc1338c9bc7ecc7cde6343c832423228df
	https://github.com/siberiwolf/java-design-patterns/blob/df4a40fc1338c9bc7ecc7cde6343c832423228df/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/df4a40fc1338c9bc7ecc7cde6343c832423228df
#358 Added license to all files using plugin	https://github.com/siberiwolf/java-design-patterns/commit/3d956960789de9dd6c805d99f5dddd2febac5abf
	https://github.com/mikulucky
mikulucky	https://github.com/siberiwolf/java-design-patterns/commits?author=mikulucky
3d95696	https://github.com/siberiwolf/java-design-patterns/commit/3d956960789de9dd6c805d99f5dddd2febac5abf
	https://github.com/siberiwolf/java-design-patterns/blob/3d956960789de9dd6c805d99f5dddd2febac5abf/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/3d956960789de9dd6c805d99f5dddd2febac5abf
Fixed checkstyle code quality issues	https://github.com/siberiwolf/java-design-patterns/commit/2e2707862abfd9c49786b8883e70eca5c07eabd3
	https://github.com/fluxw42
fluxw42	https://github.com/siberiwolf/java-design-patterns/commits?author=fluxw42
2e27078	https://github.com/siberiwolf/java-design-patterns/commit/2e2707862abfd9c49786b8883e70eca5c07eabd3
	https://github.com/siberiwolf/java-design-patterns/blob/2e2707862abfd9c49786b8883e70eca5c07eabd3/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/2e2707862abfd9c49786b8883e70eca5c07eabd3
Added tests for null-object pattern	https://github.com/siberiwolf/java-design-patterns/commit/8f6f171a3f5a17b865114cb72028b0811192737a
	https://github.com/fluxw42
fluxw42	https://github.com/siberiwolf/java-design-patterns/commits?author=fluxw42
8f6f171	https://github.com/siberiwolf/java-design-patterns/commit/8f6f171a3f5a17b865114cb72028b0811192737a
	https://github.com/siberiwolf/java-design-patterns/blob/8f6f171a3f5a17b865114cb72028b0811192737a/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/8f6f171a3f5a17b865114cb72028b0811192737a
Fix PMD violations #327	https://github.com/siberiwolf/java-design-patterns/commit/5f033be54fef0976fd874381591a527c19059286
	https://github.com/iluwatar
iluwatar	https://github.com/siberiwolf/java-design-patterns/commits?author=iluwatar
5f033be	https://github.com/siberiwolf/java-design-patterns/commit/5f033be54fef0976fd874381591a527c19059286
	https://github.com/siberiwolf/java-design-patterns/blob/5f033be54fef0976fd874381591a527c19059286/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/5f033be54fef0976fd874381591a527c19059286
Adjust checkstyle rules. Make checkstyle fail the build when violations are found. Correct all current checkstyle violations.	https://github.com/siberiwolf/java-design-patterns/commit/cec9a99410a0544ff0f1a5853443ef9dcff0a9e7
	https://github.com/iluwatar
iluwatar	https://github.com/siberiwolf/java-design-patterns/commits?author=iluwatar
cec9a99	https://github.com/siberiwolf/java-design-patterns/commit/cec9a99410a0544ff0f1a5853443ef9dcff0a9e7
	https://github.com/siberiwolf/java-design-patterns/blob/cec9a99410a0544ff0f1a5853443ef9dcff0a9e7/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/cec9a99410a0544ff0f1a5853443ef9dcff0a9e7
Reformat rest of the design patterns - Issue #224	https://github.com/siberiwolf/java-design-patterns/commit/306b1f3d31751448d1904657d065bd0241e9dec2
	https://github.com/ankurkaushal
ankurkaushal	https://github.com/siberiwolf/java-design-patterns/commits?author=ankurkaushal
306b1f3	https://github.com/siberiwolf/java-design-patterns/commit/306b1f3d31751448d1904657d065bd0241e9dec2
	https://github.com/siberiwolf/java-design-patterns/blob/306b1f3d31751448d1904657d065bd0241e9dec2/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/306b1f3d31751448d1904657d065bd0241e9dec2
#107 Improve JavaDoc for Null Object example	https://github.com/siberiwolf/java-design-patterns/commit/2bc23844a40a98cc21c3bf034f638d6c8713baf4
	https://github.com/iluwatar
iluwatar	https://github.com/siberiwolf/java-design-patterns/commits?author=iluwatar
2bc2384	https://github.com/siberiwolf/java-design-patterns/commit/2bc23844a40a98cc21c3bf034f638d6c8713baf4
	https://github.com/siberiwolf/java-design-patterns/blob/2bc23844a40a98cc21c3bf034f638d6c8713baf4/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/2bc23844a40a98cc21c3bf034f638d6c8713baf4
Changed package naming across all examples.	https://github.com/siberiwolf/java-design-patterns/commit/8524c75ba6fd1e2bfe1f5cba3d3c9211bdcbbfcb
	https://github.com/iluwatar
iluwatar	https://github.com/siberiwolf/java-design-patterns/commits?author=iluwatar
8524c75	https://github.com/siberiwolf/java-design-patterns/commit/8524c75ba6fd1e2bfe1f5cba3d3c9211bdcbbfcb
	https://github.com/siberiwolf/java-design-patterns/blob/8524c75ba6fd1e2bfe1f5cba3d3c9211bdcbbfcb/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/8524c75ba6fd1e2bfe1f5cba3d3c9211bdcbbfcb
Null object as a singleton #50	https://github.com/siberiwolf/java-design-patterns/commit/89e6692ba8189eddea20b1f34a98fc0425576428
	https://github.com/iluwatar
iluwatar	https://github.com/siberiwolf/java-design-patterns/commits?author=iluwatar
89e6692	https://github.com/siberiwolf/java-design-patterns/commit/89e6692ba8189eddea20b1f34a98fc0425576428
	https://github.com/siberiwolf/java-design-patterns/blob/89e6692ba8189eddea20b1f34a98fc0425576428/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/89e6692ba8189eddea20b1f34a98fc0425576428
Added Null Object pattern.	https://github.com/siberiwolf/java-design-patterns/commit/1cad280629d2780ca7866d559e0c155a0e0df5a1
	https://github.com/iluwatar
iluwatar	https://github.com/siberiwolf/java-design-patterns/commits?author=iluwatar
1cad280	https://github.com/siberiwolf/java-design-patterns/commit/1cad280629d2780ca7866d559e0c155a0e0df5a1
	https://github.com/siberiwolf/java-design-patterns/blob/1cad280629d2780ca7866d559e0c155a0e0df5a1/null-object/src
	https://github.com/siberiwolf/java-design-patterns/tree/1cad280629d2780ca7866d559e0c155a0e0df5a1
	https://github.com
Terms	https://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacy	https://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Security	https://github.com/security
Status	https://www.githubstatus.com/
Community	https://github.community/
Docs	https://docs.github.com/
Contact	https://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.