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    <description>一个安静的角落</description>
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      <title>Google Gemini 完全使用指南（2026）：从免费版到 Gemini Advanced 全功能上手</title>
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      <description>从零基础到进阶，全面讲解 Google Gemini 的模型版本、免费功能、Deep Research、多模态能力、API 使用方法及国内订阅指南。</description>
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      <title>Claude Code 深度实战指南（2026）：CLAUDE.md、Hooks、Skills 与 MCP 完全解析</title>
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      <description>Claude Code 进阶功能完全指南：深入讲解 CLAUDE.md 持久记忆、Hooks 确定性自动化、Skills 可复用工作流与 MCP 外部工具连接，以及子代理、上下文管理等工程化实践。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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      <title>Java 字符串详解：String、StringBuilder 与常用方法全解析</title>
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      <description>String 不可变性与常量池、StringBuilder 高效拼接，覆盖 split/format/valueOf 等核心方法，附真实示例与性能对比。</description>
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      <title>Java 入门：JDK、JRE、JVM 是什么，从安装到跑通第一个程序</title>
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      <description>Java从零基础系列第一讲：搞懂JDK/JRE/JVM关系与字节码原理，实测安装JDK 26并跑通Hello World、jshell与包结构示例</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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      <title>多态：向上转型、向下转型与动态绑定</title>
      <link>https://blog.shenqingci.com/blog/java-polymorphism-upcasting-downcasting-2026</link>
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      <description>讲清楚多态的三个前提、向上转型与向下转型的区别，揭示动态绑定背后的虚方法表机制，并用真实编译运行的代码演示重写与重载的本质差异。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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      <title>计算机网络从零基础（十二）：TCP的可靠传输——滑动窗口、超时重传与拥塞控制</title>
      <link>https://blog.shenqingci.com/blog/tcp-reliable-transmission-sliding-window-congestion-control-2026</link>
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      <description>本讲讲解TCP如何用序号、累积确认与滑动窗口保证有序传输,用超时重传和快速重传应对丢包,再通过慢启动与拥塞避免实现拥塞控制,并对比CUBIC与BBR算法现状。</description>
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      <title>个人博客搭建完全指南：从零开始建立你的数字家园（2026）</title>
      <link>https://blog.shenqingci.com/blog/personal-blog-setup-complete-guide-2026</link>
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      <description>从零搭建个人博客的 2026 完全指南：三类方案怎么选、Hexo 实操命令、买域名、Vercel/Cloudflare 部署、SEO、评论统计、选题与成本，零基础照着做就能上线。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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      <title>JWT 是什么：从结构到原理，配一个可交互的解码器</title>
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      <description>用一个可交互的解码器带你理解 JWT：三段结构、签名原理、登录流程，以及「明文可读」「难以吊销」等最常见的误解与安全实践。</description>
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      <title>面向对象基础：类与对象、构造方法、this 关键字</title>
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      <description>本讲正式进入Java面向对象编程：讲清类与对象的关系，构造方法重载与this(...)调用链，this关键字三大用法，并配两个真实编译运行的示例代码。</description>
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      <title>UDP协议详解：与TCP的对比及适用场景</title>
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      <description>零基础讲透UDP协议：报文格式、与TCP的核心差异、DNS/游戏/音视频等真实应用场景，以及QUIC如何在UDP之上重建可靠传输。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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      <title>Claude Science 深度解析（2026）：Anthropic 如何用工作流重构科研流程</title>
      <link>https://blog.shenqingci.com/blog/claude-science-ai-workbench-complete-guide-2026</link>
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      <description>Anthropic 于 2026 年 6 月底正式推出 Claude Science 公测版，这是一个整合了超过 60 个科学数据库、多智能体工作流和原生科学可视化的研究工作台，本文深度解析其架构、数据库生态、典型场景与局限性。</description>
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      <title>泛型：类型参数、通配符与类型擦除</title>
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      <description>深入讲解 Java 泛型的核心概念：泛型类、泛型方法、有界类型参数、三种通配符（无界/?/上界/下界）及 PECS 原则，并揭秘类型擦除的底层机制与常见限制。</description>
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      <title>防火墙原理：包过滤、状态检测与下一代防火墙</title>
      <link>https://blog.shenqingci.com/blog/firewall-packet-filter-stateful-ngfw-2026</link>
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      <description>从无状态包过滤到状态检测，再到下一代防火墙（NGFW），深入讲解三代防火墙的工作原理、规则设计、DPI深度包检测、应用识别与用户身份集成。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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    <item>
      <title>OpenAI Codex 完全使用指南（2026）：零基础到所有功能</title>
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      <description>一篇讲全的 OpenAI Codex 完全指南：它是什么、App/IDE/CLI/Cloud 四种入口怎么选、CLI 所有命令与参数、权限沙箱、AGENTS.md、多代理并行、自动化、模型选择，以及和 Claude Code 怎么取舍，附实战工作流与 FAQ。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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      <title>v0.dev vs Bolt.new vs Lovable：AI 建站三巨头完全对比指南（2026）</title>
      <link>https://blog.shenqingci.com/blog/v0dev-bolt-lovable-ai-builder-comparison-2026</link>
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      <description>深度对比 v0.dev、Bolt.new、Lovable 三款 2026 年最热 AI 建站工具，从技术栈、定价、使用场景到选型决策，帮你找到最适合自己的工具。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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    <item>
      <title>AI 图像生成工具完全指南（2026）：GPT Image 2、Nano Banana 2、Flux 2 怎么选</title>
      <link>https://blog.shenqingci.com/blog/ai-image-generation-tools-guide-2026</link>
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      <description>GPT Image 2、Nano Banana 2、Flux 2 Pro 怎么选？梳理2026年主流AI图像生成模型价格与场景对比，附提示词模板与本地部署方案。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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    <item>
      <title>抽象类与接口：abstract、interface 与 default 方法</title>
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      <description>从零讲清楚抽象类与接口的语法、区别与选型，覆盖 default/static/private 方法、多接口实现冲突解决和 sealed interface 入门，全部真实编译运行验证。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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    <item>
      <title>继承：extends、super 关键字与方法重写</title>
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      <description>从 extends 建立继承关系讲到 super 调用父类构造方法与方法，配合真实编译运行讲清方法重写规则、final 限制，以及 Java 17 sealed 类对继承范围的现代化控制。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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    <item>
      <title>封装：访问修饰符、getter/setter 与 JavaBean 规范</title>
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      <description>从私有字段、getter/setter 到 JavaBean 规范，用银行账户和不可变对象两个真实可运行的例子讲清楚 Java 封装的原理与设计取舍。</description>
      <pubDate>Tue, 07 Jul 2026 07:50:58 GMT</pubDate>
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      <title>交换机原理：MAC地址表、VLAN与生成树协议</title>
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      <description>本讲带你了解交换机如何通过MAC地址表学习与转发数据帧，VLAN如何切分广播域、802.1Q标签格式，以及STP/RSTP如何在多交换机环路中避免广播风暴。</description>
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