René's URL Explorer Experiment

Title: JavaGuide/docs/java/basis/java-basic-questions-02.md at patch-4 · LunaSpica/JavaGuide · GitHub

Open Graph Title: JavaGuide/docs/java/basis/java-basic-questions-02.md at patch-4 · LunaSpica/JavaGuide

X Title: JavaGuide/docs/java/basis/java-basic-questions-02.md at patch-4 · LunaSpica/JavaGuide

Description: Java 面试 & 后端通用面试指南，覆盖计算机基础、数据库、分布式、高并发、系统设计与 AI 应用开发 - JavaGuide/docs/java/basis/java-basic-questions-02.md at patch-4 · LunaSpica/JavaGuide

Open Graph Description: Java 面试 & 后端通用面试指南，覆盖计算机基础、数据库、分布式、高并发、系统设计与 AI 应用开发 - LunaSpica/JavaGuide

X Description: Java 面试 & 后端通用面试指南，覆盖计算机基础、数据库、分布式、高并发、系统设计与 AI 应用开发 - LunaSpica/JavaGuide

Opengraph URL: https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md

X: @github

direct link

Domain: github.com

route-pattern	/:user_id/:repository/blob/name(/path)
route-controller	blob
route-action	show
fetch-nonce	v2:598e43f6-b91a-e812-ad4d-e1c5cf6ebe53
current-catalog-service-hash	f3abb0cc802f3d7b95fc8762b94bdcb13bf39634c40c357301c4aa1d67a256fb
request-id	8770:1757D5:74C657:A033CE:6A627B78
html-safe-nonce	f4b3eae2fdad22a8e510491b8a0b0422a8083750b8f98d992f17f8764b71d4df
visitor-payload	eyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiI4NzcwOjE3NTdENTo3NEM2NTc6QTAzM0NFOjZBNjI3Qjc4IiwidmlzaXRvcl9pZCI6IjYzOTAwMDYwNDA3MzEyMjA4NTYiLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmac	f6800d29a67cb04adbad4f07d8030d9c5979a214f4808881c097fa8995d791f2
hovercard-subject-tag	repository:1228891256
github-keyboard-shortcuts	repository,source-code,file-tree,copilot
google-site-verification	Apib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-url	https://collector.github.com/github/collect
analytics-location	///blob/show
fb:app_id	1401488693436528
apple-itunes-app	app-id=1477376905, app-argument=https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md
twitter:image	https://opengraph.githubassets.com/312eb9fd81cfa09081721a851cf7334f8f3c6dbc72739ebced197dc2ad6d4132/LunaSpica/JavaGuide
twitter:card	summary_large_image
og:image	https://opengraph.githubassets.com/312eb9fd81cfa09081721a851cf7334f8f3c6dbc72739ebced197dc2ad6d4132/LunaSpica/JavaGuide
og:image:alt	Java 面试 & 后端通用面试指南，覆盖计算机基础、数据库、分布式、高并发、系统设计与 AI 应用开发 - LunaSpica/JavaGuide
og:image:width	1200
og:image:height	600
og:site_name	GitHub
og:type	object
hostname	github.com
expected-hostname	github.com
None	838e87bd0e4f5415707a930bc14e89e382dc2ea046e50ff575252eb2f2cb06a2
turbo-cache-control	no-cache
go-import	github.com/LunaSpica/JavaGuide git https://github.com/LunaSpica/JavaGuide.git
octolytics-dimension-user_id	204216951
octolytics-dimension-user_login	LunaSpica
octolytics-dimension-repository_id	1228891256
octolytics-dimension-repository_nwo	LunaSpica/JavaGuide
octolytics-dimension-repository_public	true
octolytics-dimension-repository_is_fork	true
octolytics-dimension-repository_parent_id	132464395
octolytics-dimension-repository_parent_nwo	Snailclimb/JavaGuide
octolytics-dimension-repository_network_root_id	132464395
octolytics-dimension-repository_network_root_nwo	Snailclimb/JavaGuide
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	f0081192f88523d2bf4cfdf22bb3e138affc4cd1
ui-target	full
theme-color	#1e2327
color-scheme	light dark

Links:

Skip to content	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#start-of-content
	https://github.com/
Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2FLunaSpica%2FJavaGuide%2Fblob%2Fpatch-4%2Fdocs%2Fjava%2Fbasis%2Fjava-basic-questions-02.md
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%2FLunaSpica%2FJavaGuide%2Fblob%2Fpatch-4%2Fdocs%2Fjava%2Fbasis%2Fjava-basic-questions-02.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=LunaSpica%2FJavaGuide
Reload	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md
Reload	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md
Reload	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md
LunaSpica	https://github.com/LunaSpica
JavaGuide	https://github.com/LunaSpica/JavaGuide
Snailclimb/JavaGuide	https://github.com/Snailclimb/JavaGuide
Notifications	https://github.com/login?return_to=%2FLunaSpica%2FJavaGuide
Fork 0	https://github.com/login?return_to=%2FLunaSpica%2FJavaGuide
Star 0	https://github.com/login?return_to=%2FLunaSpica%2FJavaGuide
Code	https://github.com/LunaSpica/JavaGuide/tree/patch-4
Pull requests 0	https://github.com/LunaSpica/JavaGuide/pulls
Actions	https://github.com/LunaSpica/JavaGuide/actions
Projects	https://github.com/LunaSpica/JavaGuide/projects
Security and quality 0	https://github.com/LunaSpica/JavaGuide/security
Insights	https://github.com/LunaSpica/JavaGuide/pulse
Code	https://github.com/LunaSpica/JavaGuide/tree/patch-4
Pull requests	https://github.com/LunaSpica/JavaGuide/pulls
Actions	https://github.com/LunaSpica/JavaGuide/actions
Projects	https://github.com/LunaSpica/JavaGuide/projects
Security and quality	https://github.com/LunaSpica/JavaGuide/security
Insights	https://github.com/LunaSpica/JavaGuide/pulse
	https://github.com/LunaSpica/JavaGuide
JavaGuide	https://github.com/LunaSpica/JavaGuide/tree/patch-4
docs	https://github.com/LunaSpica/JavaGuide/tree/patch-4/docs
java	https://github.com/LunaSpica/JavaGuide/tree/patch-4/docs/java
basis	https://github.com/LunaSpica/JavaGuide/tree/patch-4/docs/java/basis
History	https://github.com/LunaSpica/JavaGuide/commits/patch-4/docs/java/basis/java-basic-questions-02.md
	https://github.com/LunaSpica/JavaGuide/commits/patch-4/docs/java/basis/java-basic-questions-02.md
JavaGuide	https://github.com/LunaSpica/JavaGuide/tree/patch-4
docs	https://github.com/LunaSpica/JavaGuide/tree/patch-4/docs
java	https://github.com/LunaSpica/JavaGuide/tree/patch-4/docs/java
basis	https://github.com/LunaSpica/JavaGuide/tree/patch-4/docs/java/basis
Raw	https://github.com/LunaSpica/JavaGuide/raw/refs/heads/patch-4/docs/java/basis/java-basic-questions-02.md
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#面向对象基础
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-面向对象和面向过程的区别
面向过程：面向过程性能比面向对象高？？	https://github.com/Snailclimb/JavaGuide/issues/431
	https://camo.githubusercontent.com/0f478de8223a3fa06860cec71452da173f9ef6ac5feb5dd18bb137f12cba03e5/68747470733a2f2f6f73732e6a61766167756964652e636e2f6769746875622f6a61766167756964652f6a6176612f62617369732f706f702d76732d6f6f702d706572666f726d616e63652e706e67
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#创建一个对象用什么运算符对象实例与对象引用有何不同
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-对象的相等和引用相等的区别
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#如果一个类没有声明构造方法该程序能正确执行吗
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#构造方法有哪些特点是否可被-override
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-面向对象三大特征
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#封装
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#继承
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#多态
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-接口和抽象类有什么共同点和区别
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#接口和抽象类的共同点
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#接口和抽象类的区别
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#深拷贝和浅拷贝区别了解吗什么是引用拷贝
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#浅拷贝
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#深拷贝
	https://camo.githubusercontent.com/f43fdb020d66750f273cc61ced7144999a067218fdfe2853125a87b89fd12783/68747470733a2f2f6f73732e6a61766167756964652e636e2f6769746875622f6a61766167756964652f6a6176612f62617369732f7368616c6c6f7726646565702d636f70792e706e67
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-object
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#object-类的常见方法有哪些
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#-和-equals-的区别
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#hashcode-有什么用
	https://camo.githubusercontent.com/0cce4c1a66c9af6c4f0c3def39759401c77c339f1f8bb8726a80ecc58847fd3d/68747470733a2f2f6f73732e6a61766167756964652e636e2f6769746875622f6a61766167756964652f6a6176612f62617369732f6a6176612d68617368636f64652d6d6574686f642e706e67
https://hg.openjdk.org/jdk8u/jdk8u/hotspot/file/87ee5ee27509/src/share/vm/runtime/globals.hpp	https://hg.openjdk.org/jdk8u/jdk8u/hotspot/file/87ee5ee27509/src/share/vm/runtime/globals.hpp
https://hg.openjdk.org/jdk8u/jdk8u/hotspot/file/87ee5ee27509/src/share/vm/runtime/synchronizer.cpp	https://hg.openjdk.org/jdk8u/jdk8u/hotspot/file/87ee5ee27509/src/share/vm/runtime/synchronizer.cpp
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#为什么要有-hashcode
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#为什么重写-equals-时必须重写-hashcode-方法
Java hashCode() 和 equals()的若干问题解答	https://www.cnblogs.com/skywang12345/p/3324958.html
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#string
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-stringstringbufferstringbuilder-的区别
	https://camo.githubusercontent.com/16be15cba1ff176cc90101e50cdcb8ba75879a44eda014291987387157f5af95/68747470733a2f2f6f73732e6a61766167756964652e636e2f6769746875622f6a61766167756964652f6a6176612f62617369732f737472696e676275666665722d6d6574686f64732e706e67
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-string-为什么是不可变的
如何理解 String 类型值的不可变？ - 知乎提问	https://www.zhihu.com/question/20618891/answer/114125846
issue 675	https://github.com/Snailclimb/JavaGuide/issues/675
	https://camo.githubusercontent.com/b71951fe5f998e20ebba35e47f866d6360c272dbb54e815382d80d994cb22d30/68747470733a2f2f6f73732e6a61766167756964652e636e2f6769746875622f6a61766167756964652f6a646b392d737472696e672d6c6174696e312e706e67
https://openjdk.java.net/jeps/254	https://openjdk.java.net/jeps/254
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-字符串拼接用-还是-stringbuilder
	https://camo.githubusercontent.com/97ec34bf84319541b85526157611d547b1c088ff223f89ea17918bde39f2d8e3/68747470733a2f2f6f73732e6a61766167756964652e636e2f6769746875622f6a61766167756964652f6a6176612f696d6167652d32303232303432323136313633373932392e706e67
	https://camo.githubusercontent.com/9ce61a7f400a0020dbb96373f9ae36a759f74bdff3448efbec07b9de7e9d2987/68747470733a2f2f6f73732e6a61766167756964652e636e2f6769746875622f6a61766167756964652f6a6176612f696d6167652d32303232303432323136313332303832332e706e67
	https://camo.githubusercontent.com/1e36db481740668e7fe9bfbf038672437ef6d31f532b3249cd2ac7f225f85a91/68747470733a2f2f6f73732e6a61766167756964652e636e2f6769746875622f6a61766167756964652f6a6176612f696d6167652d32303232303432323136323332373431352e706e67
JEP 280	https://openjdk.org/jeps/280
StringBuilder？来重温一下字符串拼接吧	https://juejin.cn/post/7182872058743750715
issue#2442	https://github.com/Snailclimb/JavaGuide/issues/2442
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#stringequals-和-objectequals-有何区别
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-字符串常量池的作用了解吗
Java 内存区域详解	https://javaguide.cn/java/jvm/memory-area.html
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#️-string-s1--new-stringabc这句话创建了几个字符串对象
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#stringintern-方法有什么作用
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#string-类型的变量和常量做运算时发生了什么
	https://camo.githubusercontent.com/86142f2478141a105097ca5d090421327700022f2281e61a54a0e16d7185b793/68747470733a2f2f6f73732e6a61766167756964652e636e2f6a6176612d67756964652d626c6f672f696d6167652d32303231303831373132333235323434312e706e67
	https://camo.githubusercontent.com/c1ae0f32889aae0fac056bd9669b4ec3925d11f7582d17d37871e07fad966ae2/68747470733a2f2f6f73732e6a61766167756964652e636e2f6a61766167756964652f696d6167652d32303231303831373134323731353339362e706e67
	https://github.com/LunaSpica/JavaGuide/blob/patch-4/docs/java/basis/java-basic-questions-02.md#参考
https://tech.meituan.com/2014/03/06/in-depth-understanding-string-intern.html	https://tech.meituan.com/2014/03/06/in-depth-understanding-string-intern.html
http://keaper.cn/2020/09/08/java-string-mian-mian-guan/	http://keaper.cn/2020/09/08/java-string-mian-mian-guan/
https://www.zhihu.com/question/55976094/answer/147302764	https://www.zhihu.com/question/55976094/answer/147302764
	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.