René's URL Explorer Experiment


Title: JavaGuide/docs/java/new-features/java21.md at main · LItertus/JavaGuide · GitHub

Open Graph Title: JavaGuide/docs/java/new-features/java21.md at main · LItertus/JavaGuide

X Title: JavaGuide/docs/java/new-features/java21.md at main · LItertus/JavaGuide

Description: 「Java学习+面试指南」一份涵盖大部分 Java 程序员所需要掌握的核心知识。准备 Java 面试，首选 JavaGuide！ - JavaGuide/docs/java/new-features/java21.md at main · LItertus/JavaGuide

Open Graph Description: 「Java学习+面试指南」一份涵盖大部分 Java 程序员所需要掌握的核心知识。准备 Java 面试，首选 JavaGuide！ - LItertus/JavaGuide

X Description: 「Java学习+面试指南」一份涵盖大部分 Java 程序员所需要掌握的核心知识。准备 Java 面试，首选 JavaGuide！ - LItertus/JavaGuide

Opengraph URL: https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md

X: @github

direct link

Domain: github.com

route-pattern/:user_id/:repository/blob/*name(/*path)
route-controllerblob
route-actionshow
fetch-noncev2:5293fce3-5aaf-df45-718a-1f27c4d2e694
current-catalog-service-hashf3abb0cc802f3d7b95fc8762b94bdcb13bf39634c40c357301c4aa1d67a256fb
request-idAE4A:124332:C4137E:10DE98C:6A6253EE
html-safe-nonce13a5ec0cdd0a08b781ed7013696d33a2c07c3758d082385b469099f1bc3822a5
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJBRTRBOjEyNDMzMjpDNDEzN0U6MTBERTk4Qzo2QTYyNTNFRSIsInZpc2l0b3JfaWQiOiIyNjQ1MTUzODg4NDY4MDk1OTgyIiwicmVnaW9uX2VkZ2UiOiJpYWQiLCJyZWdpb25fcmVuZGVyIjoiaWFkIn0=
visitor-hmac7ef2aac9704adb6f25eb7046bf9eeb80dd35958074aae3beb471056dbf498b5b
hovercard-subject-tagrepository:745811870
github-keyboard-shortcutsrepository,source-code,file-tree,copilot
google-site-verificationApib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-urlhttps://collector.github.com/github/collect
analytics-location///blob/show
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md
twitter:imagehttps://opengraph.githubassets.com/b741f5474d0cecfb3f17816912824e1ee524f90eb40d54f697673fac8ff8f8a9/LItertus/JavaGuide
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/b741f5474d0cecfb3f17816912824e1ee524f90eb40d54f697673fac8ff8f8a9/LItertus/JavaGuide
og:image:alt「Java学习+面试指南」一份涵盖大部分 Java 程序员所需要掌握的核心知识。准备 Java 面试，首选 JavaGuide！ - LItertus/JavaGuide
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
hostnamegithub.com
expected-hostnamegithub.com
Noneb928dd27bb9305f313c737471c216297e218430ec505d064cf33d7d74af9bf89
turbo-cache-controlno-cache
go-importgithub.com/LItertus/JavaGuide git https://github.com/LItertus/JavaGuide.git
octolytics-dimension-user_id35157828
octolytics-dimension-user_loginLItertus
octolytics-dimension-repository_id745811870
octolytics-dimension-repository_nwoLItertus/JavaGuide
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forktrue
octolytics-dimension-repository_parent_id132464395
octolytics-dimension-repository_parent_nwoSnailclimb/JavaGuide
octolytics-dimension-repository_network_root_id132464395
octolytics-dimension-repository_network_root_nwoSnailclimb/JavaGuide
turbo-body-classeslogged-out env-production page-responsive
disable-turbofalse
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
release6f728c3f39985ee4d171ffdd5591d8d2652392d9
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2FLItertus%2FJavaGuide%2Fblob%2Fmain%2Fdocs%2Fjava%2Fnew-features%2Fjava21.md
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub Copilot appDirect agents from issue to mergehttps://github.com/features/ai/github-app
MCP RegistryNewIntegrate external toolshttps://github.com/mcp
ActionsAutomate any workflowhttps://github.com/features/actions
CodespacesInstant dev environmentshttps://github.com/features/codespaces
IssuesPlan and track workhttps://github.com/features/issues
Code ReviewManage code changeshttps://github.com/features/code-review
Code QualityEnforce quality at mergehttps://github.com/features/code-quality
GitHub Advanced SecurityFind and fix vulnerabilitieshttps://github.com/security/advanced-security
Code securitySecure your code as you buildhttps://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they starthttps://github.com/security/advanced-security/secret-protection
Why GitHubhttps://github.com/why-github
Documentationhttps://docs.github.com
Bloghttps://github.blog
Changeloghttps://github.blog/changelog
Marketplacehttps://github.com/marketplace
View all featureshttps://github.com/features
Enterpriseshttps://github.com/enterprise
Small and medium teamshttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
App Modernizationhttps://github.com/solutions/use-case/app-modernization
DevSecOpshttps://github.com/solutions/use-case/devsecops
DevOpshttps://github.com/solutions/use-case/devops
CI/CDhttps://github.com/solutions/use-case/ci-cd
View all use caseshttps://github.com/solutions/use-case
Healthcarehttps://github.com/solutions/industry/healthcare
Financial serviceshttps://github.com/solutions/industry/financial-services
Manufacturinghttps://github.com/solutions/industry/manufacturing
Governmenthttps://github.com/solutions/industry/government
View all industrieshttps://github.com/solutions/industry
View all solutionshttps://github.com/solutions
AIhttps://github.com/resources/articles?topic=ai
Software Developmenthttps://github.com/resources/articles?topic=software-development
DevOpshttps://github.com/resources/articles?topic=devops
Securityhttps://github.com/resources/articles?topic=security
View all topicshttps://github.com/resources/articles
Customer storieshttps://github.com/customer-stories
Events & webinarshttps://github.com/resources/events
Ebooks & reportshttps://github.com/resources/whitepapers
Business insightshttps://github.com/solutions/executive-insights
GitHub Skillshttps://skills.github.com
Documentationhttps://docs.github.com
Customer supporthttps://support.github.com
Community forumhttps://github.com/orgs/community/discussions
Trust centerhttps://github.com/trust-center
Partnershttps://github.com/partners
View all resourceshttps://github.com/resources
GitHub SponsorsFund open source developershttps://github.com/open-source/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/open-source/accelerator
GitHub Starshttps://stars.github.com
Archive Programhttps://archiveprogram.github.com
Topicshttps://github.com/topics
Trendinghttps://github.com/trending
Collectionshttps://github.com/collections
Enterprise platformAI-powered developer platformhttps://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security featureshttps://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI featureshttps://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 supporthttps://github.com/enterprise/premium-support
Pricinghttps://github.com/pricing
Search syntax tipshttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentationhttps://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%2FLItertus%2FJavaGuide%2Fblob%2Fmain%2Fdocs%2Fjava%2Fnew-features%2Fjava21.md
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%2Fblob%2Fshow&source=header-repo&source_repo=LItertus%2FJavaGuide
Reloadhttps://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md
Reloadhttps://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md
Reloadhttps://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md
LItertus https://github.com/LItertus
JavaGuidehttps://github.com/LItertus/JavaGuide
Snailclimb/JavaGuidehttps://github.com/Snailclimb/JavaGuide
Notifications https://github.com/login?return_to=%2FLItertus%2FJavaGuide
Fork 0 https://github.com/login?return_to=%2FLItertus%2FJavaGuide
Star 0 https://github.com/login?return_to=%2FLItertus%2FJavaGuide
Code https://github.com/LItertus/JavaGuide
Pull requests 0 https://github.com/LItertus/JavaGuide/pulls
Actions https://github.com/LItertus/JavaGuide/actions
Projects https://github.com/LItertus/JavaGuide/projects
Security and quality 0 https://github.com/LItertus/JavaGuide/security
Insights https://github.com/LItertus/JavaGuide/pulse
Code https://github.com/LItertus/JavaGuide
Pull requests https://github.com/LItertus/JavaGuide/pulls
Actions https://github.com/LItertus/JavaGuide/actions
Projects https://github.com/LItertus/JavaGuide/projects
Security and quality https://github.com/LItertus/JavaGuide/security
Insights https://github.com/LItertus/JavaGuide/pulse
https://github.com/LItertus/JavaGuide
JavaGuidehttps://github.com/LItertus/JavaGuide/tree/main
docshttps://github.com/LItertus/JavaGuide/tree/main/docs
javahttps://github.com/LItertus/JavaGuide/tree/main/docs/java
new-featureshttps://github.com/LItertus/JavaGuide/tree/main/docs/java/new-features
Historyhttps://github.com/LItertus/JavaGuide/commits/main/docs/java/new-features/java21.md
https://github.com/LItertus/JavaGuide/commits/main/docs/java/new-features/java21.md
JavaGuidehttps://github.com/LItertus/JavaGuide/tree/main
docshttps://github.com/LItertus/JavaGuide/tree/main/docs
javahttps://github.com/LItertus/JavaGuide/tree/main/docs/java
new-featureshttps://github.com/LItertus/JavaGuide/tree/main/docs/java/new-features
Rawhttps://github.com/LItertus/JavaGuide/raw/refs/heads/main/docs/java/new-features/java21.md
JEP 430：String Templates（字符串模板）https://openjdk.org/jeps/430
JEP 431：Sequenced Collections（序列化集合）https://openjdk.org/jeps/431
JEP 439：Generational ZGC（分代 ZGC）https://openjdk.org/jeps/439
JEP 440：Record Patterns（记录模式）https://openjdk.org/jeps/440
JEP 441：Pattern Matching for switch（switch 的模式匹配）https://openjdk.org/jeps/442
JEP 442：Foreign Function & Memory API（外部函数和内存 API）https://openjdk.org/jeps/442
JEP 443：Unnamed Patterns and Variables（未命名模式和变量https://openjdk.org/jeps/443
JEP 444：Virtual Threads（虚拟线程）https://openjdk.org/jeps/444
JEP 445：Unnamed Classes and Instance Main Methods（未命名类和实例 main 方法 ）https://openjdk.org/jeps/445
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#jep-430字符串模板预览
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#jep431序列化集合
SequencedCollectionhttps://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/SequencedCollection.html
SequencedSethttps://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/SequencedSet.html
SequencedMaphttps://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/SequencedMap.html
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#jep-439分代-zgc
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#jep-440记录模式
JEP 405https://openjdk.org/jeps/405
JEP 432https://openjdk.org/jeps/432
Java 20 新特性概览https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java20.md
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#jep-441switch-的模式匹配
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#jep-442-外部函数和内存-api第三次预览
JEP 412https://openjdk.java.net/jeps/412
JEP 419https://openjdk.org/jeps/419
JEP 424https://openjdk.org/jeps/424
JEP 434https://openjdk.org/jeps/434
JEP 442https://openjdk.org/jeps/442
Java 19 新特性概览https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java19.md
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#jep-443未命名模式和变量预览
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#jep-444虚拟线程
JEP 425https://openjdk.org/jeps/425
Java 20 新特性概览https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java20.md
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#jep-445未命名类和实例-main-方法-预览
https://github.com/LItertus/JavaGuide/blob/main/docs/java/new-features/java21.md#参考
https://howtodoinjava.com/java/java-string-templates/https://howtodoinjava.com/java/java-string-templates/
https://howtodoinjava.com/java/sequenced-collections/https://howtodoinjava.com/java/sequenced-collections/
https://github.com
Termshttps://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacyhttps://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Securityhttps://github.com/security
Statushttps://www.githubstatus.com/
Communityhttps://github.community/
Docshttps://docs.github.com/
Contacthttps://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.