[{"data":1,"prerenderedAt":4086},["ShallowReactive",2],{"search-docs":3,"doc-\u002Fother\u002Fjava\u002Fio\u002Fbuffer-stream":886},[4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,100,104,108,112,116,120,124,128,132,136,140,144,148,152,156,159,162,165,169,172,175,178,182,186,190,194,198,202,206,210,214,218,222,226,230,234,238,242,246,250,254,258,262,266,269,273,277,281,285,288,291,294,298,301,304,307,310,313,316,319,322,325,329,332,336,340,344,348,352,356,359,362,365,368,371,374,377,380,383,386,389,393,396,399,402,405,408,411,414,417,420,424,428,432,435,438,442,446,450,454,458,462,466,470,474,477,480,483,487,491,494,497,500,504,507,511,515,518,521,524,527,530,533,536,539,542,545,548,551,554,557,560,563,566,569,572,575,579,583,587,591,595,599,603,606,610,614,617,620,623,626,629,633,637,640,643,646,649,652,655,658,661,664,667,670,673,676,679,682,685,688,691,694,697,700,703,706,709,712,716,720,724,728,732,736,740,744,748,752,756,760,764,768,772,775,779,783,787,790,793,796,799,802,805,808,811,814,818,822,825,829,832,835,838,841,844,848,851,854,858,862,865,869,873,876,879,882],{"path":5,"title":6,"description":7},"\u002Fabout\u002Fauthor","作者相关","只想纯粹的做一个程序员...",{"path":9,"title":10,"description":11},"\u002Fabout\u002Fjourney","心路历程","",{"path":13,"title":14,"description":15},"\u002Fai\u002Fagent\u002Fframeworks","Agent 框架","主流 Agent 框架：LangChain、LlamaIndex、AutoGen、CrewAI",{"path":17,"title":18,"description":19},"\u002Fai\u002Fagent\u002Fhooks","Agent Hooks 与自动化","Claude Agent 的 Hooks 生命周期、事件类型、典型自动化场景",{"path":21,"title":22,"description":23},"\u002Fai\u002Fagent\u002Fintroduction","AI Agent 概述","AI Agent 核心概念：感知、规划、执行、记忆",{"path":25,"title":26,"description":27},"\u002Fai\u002Fagent\u002Fpractice","Agent 实战","AI Agent 实战：构建自主任务执行系统",{"path":29,"title":30,"description":31},"\u002Fai\u002Fagent\u002Fsdk","Claude Agent SDK 开发","使用 Claude Agent SDK 构建自定义 AI Agent：架构、API、生命周期",{"path":33,"title":34,"description":35},"\u002Fai\u002Fagent\u002Fsubagents","Subagents 子代理","用 Subagents 分解复杂任务、并发执行、隔离上下文",{"path":37,"title":38,"description":39},"\u002Fai\u002Fagent\u002Ftool-use","工具调用","AI Agent 工具调用：Function Calling、Tool Use 原理与实践",{"path":41,"title":42,"description":43},"\u002Fai\u002Ffundamentals\u002Fdeep-learning","深度学习入门","深度学习基础知识：前向传播、反向传播、损失函数、优化器",{"path":45,"title":46,"description":47},"\u002Fai\u002Ffundamentals\u002Fml-basics","机器学习基础","机器学习核心概念：监督学习、无监督学习、强化学习",{"path":49,"title":50,"description":51},"\u002Fai\u002Ffundamentals\u002Fneural-networks","神经网络原理","神经网络架构：CNN、RNN、注意力机制",{"path":53,"title":54,"description":55},"\u002Fai\u002Fgetting-started","AI 学习路线","AI 技术学习路线图，从基础到实战的完整指南",{"path":57,"title":58,"description":59},"\u002Fai\u002Fllm\u002Ffine-tuning","模型微调","大模型微调技术：LoRA、QLoRA、全量微调、RLHF",{"path":61,"title":62,"description":63},"\u002Fai\u002Fllm\u002Fintroduction","大模型概述","大语言模型发展历程、核心能力与主流模型对比",{"path":65,"title":66,"description":67},"\u002Fai\u002Fllm\u002Flocal-deploy","本地部署","大模型本地部署：Ollama、vLLM、llama.cpp",{"path":69,"title":70,"description":71},"\u002Fai\u002Fllm\u002Ftransformer","Transformer 架构","Transformer 架构详解：自注意力机制、位置编码、多头注意力",{"path":73,"title":74,"description":75},"\u002Fai\u002Fmcp\u002Fclient","MCP Client 开发","MCP Client 开发指南：连接、调用、集成",{"path":77,"title":78,"description":79},"\u002Fai\u002Fmcp\u002Fdebugging","MCP 调试与排错","MCP Server 开发与集成过程中的常见问题、日志分析、诊断工具",{"path":81,"title":82,"description":83},"\u002Fai\u002Fmcp\u002Fintroduction","MCP 概述","Model Context Protocol 协议概述：架构、核心概念、应用场景",{"path":85,"title":86,"description":87},"\u002Fai\u002Fmcp\u002Fserver","MCP Server 开发","MCP Server 开发指南：资源、工具、提示词的实现",{"path":89,"title":90,"description":91},"\u002Fai\u002Fmcp\u002Ftools","MCP Tools 深入","深入理解 MCP Tools：与 Resources\u002FPrompts 的差异、Schema 设计、Annotations 与权限控制",{"path":93,"title":94,"description":95},"\u002Fai\u002Fprompt\u002Fadvanced","高级 Prompt 模式","高级 Prompt 设计模式：Tree-of-Thought、自我反思、多轮对话策略",{"path":97,"title":98,"description":99},"\u002Fai\u002Fprompt\u002Fbasics","Prompt 基础","Prompt Engineering 入门：基本概念、角色设定、输出格式控制",{"path":101,"title":102,"description":103},"\u002Fai\u002Fprompt\u002Ftechniques","提示词技巧","常用提示词技巧：Few-shot、Chain-of-Thought、ReAct",{"path":105,"title":106,"description":107},"\u002Fai\u002Frag\u002Fembedding","文本嵌入","文本嵌入模型：Embedding 原理、模型选择、相似度计算",{"path":109,"title":110,"description":111},"\u002Fai\u002Frag\u002Fintroduction","RAG 概述","检索增强生成（RAG）架构原理、优势与应用场景",{"path":113,"title":114,"description":115},"\u002Fai\u002Frag\u002Fpractice","RAG 实战","RAG 应用实战：文档问答系统、知识库搭建",{"path":117,"title":118,"description":119},"\u002Fai\u002Frag\u002Fvector-database","向量数据库","主流向量数据库对比：Milvus、Pinecone、Chroma、Weaviate",{"path":121,"title":122,"description":123},"\u002Fai\u002Fskills\u002Fbest-practices","Skill 最佳实践","编写高质量 Skill 的设计原则、常见陷阱与优化技巧",{"path":125,"title":126,"description":127},"\u002Fai\u002Fskills\u002Fcreating","创建自定义 Skill","从零编写一个可被 Agent 自动发现和调用的 Skill",{"path":129,"title":130,"description":131},"\u002Fai\u002Fskills\u002Fintroduction","Agent Skills 概述","Claude Agent Skills 概念、工作原理、与 Tools\u002FMCP 的区别",{"path":133,"title":134,"description":135},"\u002Fgolang\u002Fadvanced\u002Fconcurrency","Go - 并发深入","深入理解 Go 并发编程的核心机制。",{"path":137,"title":138,"description":139},"\u002Fgolang\u002Fadvanced\u002Fgc","Go - 垃圾回收","理解 Go 的垃圾回收机制，掌握 GC 调优方法。",{"path":141,"title":142,"description":143},"\u002Fgolang\u002Fadvanced\u002Fgmp","Go - GMP 调度模型","GMP 是 Go 运行时调度器的核心模型，理解它对于编写高性能 Go 程序至关重要。",{"path":145,"title":146,"description":147},"\u002Fgolang\u002Fadvanced\u002Fgo-concurrency","Go - 并发编程","Go 的并发是其核心特性之一，通过 Goroutine 和 Channel 实现。",{"path":149,"title":150,"description":151},"\u002Fgolang\u002Fadvanced\u002Fmemory","Go - 内存模型","理解 Go 的内存分配机制和内存模型。",{"path":153,"title":154,"description":155},"\u002Fgolang\u002Fadvanced\u002Fprofiling","Go - 性能分析","掌握 Go 的性能分析工具：pprof、trace、benchmark。",{"path":157,"title":158,"description":11},"\u002Fgolang\u002Fcore\u002Fgo-basic","Go - 基础语法",{"path":160,"title":161,"description":11},"\u002Fgolang\u002Fcore\u002Fgo-composite","Go - 复合类型",{"path":163,"title":164,"description":11},"\u002Fgolang\u002Fcore\u002Fgo-control","Go - 流程控制",{"path":166,"title":167,"description":168},"\u002Fgolang\u002Fcore\u002Fgo-error","Go - 错误处理","Go 使用显式的错误返回值来处理错误，而不是异常机制。",{"path":170,"title":171,"description":11},"\u002Fgolang\u002Fcore\u002Fgo-function","Go - 函数",{"path":173,"title":174,"description":11},"\u002Fgolang\u002Fcore\u002Fgo-install","Go - 环境搭建",{"path":176,"title":177,"description":11},"\u002Fgolang\u002Fcore\u002Fgo-interface","Go - 接口",{"path":179,"title":180,"description":181},"\u002Fgolang\u002Fcore\u002Fgo-module","Go - 包管理","Go Modules 是 Go 1.11 引入的官方依赖管理方案，Go 1.16 后成为默认模式。",{"path":183,"title":184,"description":185},"\u002Fgolang\u002Fdistributed\u002Fgrpc","Go - gRPC","gRPC 是 Google 开发的高性能 RPC 框架，使用 Protocol Buffers 作为序列化协议。",{"path":187,"title":188,"description":189},"\u002Fgolang\u002Fdistributed\u002Fmicroservice","Go - 微服务","微服务架构的核心组件：服务发现、负载均衡、熔断降级。",{"path":191,"title":192,"description":193},"\u002Fgolang\u002Fdistributed\u002Fmq","Go - 消息队列","使用 Go 操作 Kafka 和 RabbitMQ。",{"path":195,"title":196,"description":197},"\u002Fgolang\u002Fdistributed\u002Fredis","Go - Redis","使用 go-redis 操作 Redis，实现缓存、分布式锁等功能。",{"path":199,"title":200,"description":201},"\u002Fgolang\u002Fengineering\u002Fconfig","Go - 配置管理","使用 viper 进行配置管理，支持多种配置格式和配置中心。",{"path":203,"title":204,"description":205},"\u002Fgolang\u002Fengineering\u002Fdocker","Go - Docker 部署","使用 Docker 容器化部署 Go 应用。",{"path":207,"title":208,"description":209},"\u002Fgolang\u002Fengineering\u002Fkubernetes","Go - Kubernetes 部署","在 Kubernetes 上部署和管理 Go 应用。",{"path":211,"title":212,"description":213},"\u002Fgolang\u002Fengineering\u002Flogging","Go - 日志系统","使用 zap 和 logrus 构建高性能结构化日志系统。",{"path":215,"title":216,"description":217},"\u002Fgolang\u002Fengineering\u002Ftesting","Go - 单元测试","Go 内置了强大的测试框架，掌握测试是编写高质量代码的基础。",{"path":219,"title":220,"description":221},"\u002Fgolang\u002Fstdlib\u002Fbufio","bufio","在 Go 语言中，bufio 包提供了带缓冲的 I\u002FO 操作，能够提高读写性能。以下是一些常用的 bufio 包 API 及其详细说明：",{"path":223,"title":224,"description":225},"\u002Fgolang\u002Fstdlib\u002Fcontainer","container","在Go语言标准库中，container 包提供了几种常用的数据结构实现，这些数据结构对于高效地管理和操作数据非常有用。以下是 container 包中主要的数据结构：",{"path":227,"title":228,"description":229},"\u002Fgolang\u002Fstdlib\u002Fcrypto","crypto","在 Go 语言中，crypto 包提供了一组用于加密和解密的功能。以下是一些常用的 crypto 包及其子包的 API 及其详细说明：",{"path":231,"title":232,"description":233},"\u002Fgolang\u002Fstdlib\u002Fencoding-csv","encoding\u002Fcsv","在 Go 语言中，encoding\u002Fcsv 包提供了对 CSV（逗号分隔值）文件进行读写的功能。以下是一些常用的 encoding\u002Fcsv 包的 API 及其详细说明：",{"path":235,"title":236,"description":237},"\u002Fgolang\u002Fstdlib\u002Fencoding-json","encoding\u002Fjson","在 Go 语言中，encoding\u002Fjson 包提供了对 JSON 数据进行编码和解码的功能。以下是一些常用的 encoding\u002Fjson 包的 API 及其详细说明：",{"path":239,"title":240,"description":241},"\u002Fgolang\u002Fstdlib\u002Fencoding-xml","encoding\u002Fxml","在 Go 语言中，encoding\u002Fxml 包提供了对 XML 数据进行编码和解码的功能。以下是一些常用的 encoding\u002Fxml 包的 API 及其详细说明：",{"path":243,"title":244,"description":245},"\u002Fgolang\u002Fstdlib\u002Fflag","flag","在Go语言中，flag 包是用于处理命令行参数的标准库，它提供了一种简单而直接的方式来解析和使用命令行参数。下面是关于 flag 包的一些基本介绍和常用功能：",{"path":247,"title":248,"description":249},"\u002Fgolang\u002Fstdlib\u002Ffmt","fmt","在 Go 语言的标准库中，fmt 包是非常重要的，它提供了处理格式化输入和输出的基本工具。以下是一些 fmt 包内常用的API：",{"path":251,"title":252,"description":253},"\u002Fgolang\u002Fstdlib\u002Fhttp","net\u002Fhttp","在 Go 语言中，net\u002Fhttp 包提供了用于构建 HTTP 客户端和服务器的强大工具。以下是一些常用的 net\u002Fhttp 包的 API 及其详细说明：",{"path":255,"title":256,"description":257},"\u002Fgolang\u002Fstdlib\u002Fio","io","在 Go 语言中，io 包提供了基本的输入输出功能。以下是一些常用的 io 包的 API 及其详细说明：",{"path":259,"title":260,"description":261},"\u002Fgolang\u002Fstdlib\u002Flog","log","在 Go 语言中，log 包提供了简单的日志记录功能。以下是一些常用的 log 包的 API 及其详细说明：",{"path":263,"title":264,"description":265},"\u002Fgolang\u002Fstdlib\u002Fmath","math","在 Go 语言中，math 包提供了基本的数学函数和常量。以下是一些常用的 math 包的 API 及其详细说明：",{"path":267,"title":268,"description":11},"\u002Fgolang\u002Fstdlib\u002Fnet","net",{"path":270,"title":271,"description":272},"\u002Fgolang\u002Fstdlib\u002Fos","os","在Go语言中，os 包是一个非常重要且常用的标准库，它提供了与操作系统交互的功能，包括文件操作、环境变量管理、进程管理等。下面是一些 os 包中常用的功能和API：",{"path":274,"title":275,"description":276},"\u002Fgolang\u002Fstdlib\u002Fsort","order","在 Go 语言中，sort 包提供了对切片和用户定义的集合进行排序的函数。它实现了常见的排序算法，如快速排序（Quicksort）和堆排序（Heapsort），并且为自定义集合提供了接口，使得用户可以根据特定的需求进行排序。",{"path":278,"title":279,"description":280},"\u002Fgolang\u002Fstdlib\u002Fstrconv","strconv","在 Go 语言中，strconv 包提供了字符串和基本数据类型之间的转换函数，例如将整数转换为字符串、字符串转换为整数，以及其他类型之间的转换。这些功能非常有用，特别是在处理用户输入或从外部数据源读取数据时。",{"path":282,"title":283,"description":284},"\u002Fgolang\u002Fstdlib\u002Ftime","time","在 Go 语言中，time 包提供了处理时间和日期的功能。以下是一些常用的 time 包的 API 及其详细说明：",{"path":286,"title":287,"description":11},"\u002Fgolang\u002Fweb\u002Fgin\u002Ferror","Gin - 错误处理",{"path":289,"title":290,"description":11},"\u002Fgolang\u002Fweb\u002Fgin\u002Ffile","Gin - 文件处理",{"path":292,"title":293,"description":11},"\u002Fgolang\u002Fweb\u002Fgin\u002Fmiddleware","Gin - 中间件",{"path":295,"title":296,"description":297},"\u002Fgolang\u002Fweb\u002Fgin\u002Fquickstart","Gin - 快速开始","Gin 是目前最流行的 Go Web 框架，以高性能和简洁 API 著称。",{"path":299,"title":300,"description":11},"\u002Fgolang\u002Fweb\u002Fgin\u002Frequest","Gin - 请求处理",{"path":302,"title":303,"description":11},"\u002Fgolang\u002Fweb\u002Fgin\u002Fresponse","Gin - 响应处理",{"path":305,"title":306,"description":11},"\u002Fgolang\u002Fweb\u002Fgin\u002Frouter","Gin - 路由",{"path":308,"title":309,"description":11},"\u002Fgolang\u002Fweb\u002Fgin\u002Fvalidation","Gin - 参数校验",{"path":311,"title":312,"description":11},"\u002Fgolang\u002Fweb\u002Fgorm\u002Fassociation","GORM - 关联关系",{"path":314,"title":315,"description":11},"\u002Fgolang\u002Fweb\u002Fgorm\u002Fcrud","GORM - CRUD 操作",{"path":317,"title":318,"description":11},"\u002Fgolang\u002Fweb\u002Fgorm\u002Fmodel","GORM - 模型定义",{"path":320,"title":321,"description":11},"\u002Fgolang\u002Fweb\u002Fgorm\u002Fperformance","GORM - 日志与性能",{"path":323,"title":324,"description":11},"\u002Fgolang\u002Fweb\u002Fgorm\u002Fquery","GORM - 高级查询",{"path":326,"title":327,"description":328},"\u002Fgolang\u002Fweb\u002Fgorm\u002Fquickstart","GORM - 快速开始","GORM 是 Go 语言最流行的 ORM 库，功能强大，使用简单。",{"path":330,"title":331,"description":11},"\u002Fgolang\u002Fweb\u002Fgorm\u002Ftransaction","GORM - 事务与 Hook",{"path":333,"title":334,"description":335},"\u002Finterview\u002Fbasic","计算机基础面经","本章节汇总了面试中常见的通用技术概念，不局限于特定语言或数据库，是考察技术内功的关键考点。",{"path":337,"title":338,"description":339},"\u002Finterview\u002Fgolang","Golang 面试题","Go 语言面试高频考点，覆盖基础语法、数据结构、并发编程、内存管理、GC、调度器等核心知识。",{"path":341,"title":342,"description":343},"\u002Finterview\u002Fk8s","Kubernetes 面试题","Kubernetes（K8s）面试高频考点，覆盖架构原理、核心资源、网络存储、调度策略、运维监控等核心知识。",{"path":345,"title":346,"description":347},"\u002Finterview\u002Fmysql","MySQL 面试题","MySQL 数据库面试高频考点，覆盖索引、事务、锁、优化、主从复制等核心知识。",{"path":349,"title":350,"description":351},"\u002Finterview\u002Fredis","Redis 面试题","Redis 面试高频考点，覆盖数据结构、持久化、集群、缓存一致性、性能优化等核心知识。",{"path":353,"title":354,"description":355},"\u002Finterview\u002Frocketmq","RocketMQ 面试题","RocketMQ 面试高频考点，覆盖消息模型、可靠性、顺序消息、事务消息、存储与高可用等核心知识。",{"path":357,"title":358,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Flist-arraylist","List - ArrayList 源码解析",{"path":360,"title":361,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Flist-linkedlist","List - LinkedList 源码解析",{"path":363,"title":364,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Flist-stack","List - Satck源码解析",{"path":366,"title":367,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Flist-vectore","List - Vector 源码解析",{"path":369,"title":370,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Fmap-hashmap","Map - HashMap 源码解析",{"path":372,"title":373,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Fmap-linkedhashmap","Map - LinkedHashMap 源码解析",{"path":375,"title":376,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Fmap-treemap","Map - TreeMap 源码解析",{"path":378,"title":379,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Fqueue-deque","Queue - Deque 接口解析",{"path":381,"title":382,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Fqueue-queue","Queue - Queue 接口解析",{"path":384,"title":385,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Fset-hashset","Set - HashSet源码解析",{"path":387,"title":388,"description":11},"\u002Fother\u002Fjava\u002Fcollection\u002Fset-linkedhashset","Set - LinkedHashSet 源码解析",{"path":390,"title":391,"description":392},"\u002Fother\u002Fjava\u002Fcollection\u002Fset-treeset","Set - TreeSet源码解析","TreeSet 是一个 Set 集合接口的实现类，与 HashSet 类似，其底层也是通过维护了一个 TreeMap 对象来封装了一些实现方法，故本篇不再对 TreeSet 的底层原理进行详细说明，仅对常用 API 做简单介绍，如需了解 TreeMap 的底层实现原理，请移步 Map - HashMap 源码解析",{"path":394,"title":395,"description":11},"\u002Fother\u002Fjava\u002Fcore\u002Fannotation","Java核心 - 注解",{"path":397,"title":398,"description":11},"\u002Fother\u002Fjava\u002Fcore\u002Fbasic-grammar","Java核心 - 基础语法",{"path":400,"title":401,"description":11},"\u002Fother\u002Fjava\u002Fcore\u002Fclass-and-object","Java核心 - 面向对象",{"path":403,"title":404,"description":11},"\u002Fother\u002Fjava\u002Fcore\u002Fcommon-classes","Java核心 - 常用类",{"path":406,"title":407,"description":11},"\u002Fother\u002Fjava\u002Fcore\u002Fexception","Java核心 - 异常处理",{"path":409,"title":410,"description":11},"\u002Fother\u002Fjava\u002Fcore\u002Fgenerics","Java核心 - 泛型",{"path":412,"title":413,"description":11},"\u002Fother\u002Fjava\u002Fcore\u002Fjdk-env-path","Java核心 - 环境搭建",{"path":415,"title":416,"description":11},"\u002Fother\u002Fjava\u002Fcore\u002Freflection","Java核心 - 反射",{"path":418,"title":419,"description":11},"\u002Fother\u002Fjava\u002Fcore\u002Fstring","Java核心 - String 字符串",{"path":421,"title":422,"description":423},"\u002Fother\u002Fjava\u002Fio\u002Fbuffer-stream","Java IO - 缓冲流","缓冲流是对基本流的包装，通过内置缓冲区减少系统调用次数，大幅提升读写效率。",{"path":425,"title":426,"description":427},"\u002Fother\u002Fjava\u002Fio\u002Fbyte-stream","Java IO - 字节流","字节流是 Java IO 中最基本的流类型，以字节（byte）为单位进行数据读写，可以处理任意类型的文件。",{"path":429,"title":430,"description":431},"\u002Fother\u002Fjava\u002Fio\u002Fchar-stream","Java IO - 字符流","字符流以字符为单位进行读写，专门用于处理文本文件。相比字节流，字符流能够正确处理字符编码，避免中文乱码问题。",{"path":433,"title":434,"description":11},"\u002Fother\u002Fjava\u002Fio\u002Ffile","Java IO - File 类",{"path":436,"title":437,"description":11},"\u002Fother\u002Fjava\u002Fio\u002Fio-stream-system","Java IO - IO流概述",{"path":439,"title":440,"description":441},"\u002Fother\u002Fjava\u002Fio\u002Fnio","Java IO - NIO","NIO（New IO）是 JDK 1.4 引入的新 IO 模型，提供了更高效的 IO 操作方式，支持非阻塞 IO 和多路复用。",{"path":443,"title":444,"description":445},"\u002Fother\u002Fjava\u002Fjvm\u002Fclass-loading","类加载机制","类加载机制是 JVM 将 .class 文件加载到内存，并对数据进行校验、转换解析和初始化，最终形成可被 JVM 直接使用的 Java 类型的过程。",{"path":447,"title":448,"description":449},"\u002Fother\u002Fjava\u002Fjvm\u002Fgarbage-collection","垃圾回收","垃圾回收（Garbage Collection，GC）是 JVM 自动管理内存的机制，负责回收不再使用的对象所占用的内存。",{"path":451,"title":452,"description":453},"\u002Fother\u002Fjava\u002Fjvm\u002Fjvm-memory","JVM 内存结构","JVM 在执行 Java 程序时，会把它管理的内存划分为若干个不同的数据区域。这些区域有各自的用途、创建和销毁时间。",{"path":455,"title":456,"description":457},"\u002Fother\u002Fjava\u002Fjvm\u002Fjvm-tuning","JVM 调优","JVM 调优是优化 Java 应用性能的重要手段，主要包括参数配置、性能监控和问题排查。",{"path":459,"title":460,"description":461},"\u002Fother\u002Fjava\u002Fthread\u002Fatomic","原子类","Java 原子类（Atomic Classes）提供了一种无锁的线程安全方式，基于 CAS（Compare-And-Swap）操作实现。",{"path":463,"title":464,"description":465},"\u002Fother\u002Fjava\u002Fthread\u002Fcompletable-future","CompletableFuture","CompletableFuture 是 JDK 8 引入的异步编程工具，实现了 Future 和 CompletionStage 接口，支持函数式编程和链式调用。",{"path":467,"title":468,"description":469},"\u002Fother\u002Fjava\u002Fthread\u002Fconcurrent-collections","并发集合","Java 并发包提供了多种线程安全的集合类，用于替代传统的同步集合（如 Collections.synchronizedList）。",{"path":471,"title":472,"description":473},"\u002Fother\u002Fjava\u002Fthread\u002Fconcurrent-utils","并发工具类","Java 并发包提供了多种实用的并发工具类，用于控制线程之间的协调与同步。",{"path":475,"title":476,"description":11},"\u002Fother\u002Fjava\u002Fthread\u002Fsynchronized-lock","同步机制",{"path":478,"title":479,"description":11},"\u002Fother\u002Fjava\u002Fthread\u002Fthread-basic","线程基础",{"path":481,"title":482,"description":11},"\u002Fother\u002Fjava\u002Fthread\u002Fthread-pool","线程池",{"path":484,"title":485,"description":486},"\u002Fother\u002Fspring-series\u002Fspring\u002Fannotations-beans","Spring - 基于注解管理Bean","从 Java 5 开始，Java 增加了对注解（Annotation）的支持，它是代码中的一种特殊标记，可以在编译、类加载和运行时被读取，执行相应的处理。开发人员可以通过注解在不改变原有代码和逻辑的情况下，在源代码中嵌入补充信息。",{"path":488,"title":489,"description":490},"\u002Fother\u002Fspring-series\u002Fspring\u002Fimplement-ioc","Spring - 原理手写IoC","Spring 框架的 IOC 是基于 Java 反射机制实现的，在学习手写 IoC 之前，你需要具备一定的 Java 反射相关的知识，参考本站内的 Java 教程。",{"path":492,"title":493,"description":11},"\u002Fother\u002Fspring-series\u002Fspring\u002Fintroduction-case","Spring - 入门案例",{"path":495,"title":496,"description":11},"\u002Fother\u002Fspring-series\u002Fspring\u002Fspring-aop","Spring - 面向切面AOP",{"path":498,"title":499,"description":11},"\u002Fother\u002Fspring-series\u002Fspring\u002Fspring-aot","Spring - AOT提前编译",{"path":501,"title":502,"description":503},"\u002Fother\u002Fspring-series\u002Fspring\u002Fspring-data-validation","Spring - 数据校验","在开发中，我们经常遇到参数校验的需求，比如用户注册的时候，要校验用户名不能为空、用户名长度不超过20个字符、手机号是合法的手机号格式等等。如果使用普通方式，我们会把校验的代码和真正的业务处理逻辑耦合在一起，而且如果未来要新增一种校验逻辑也需要在修改多个地方。而spring validation允许通过注解的方式来定义对象校验规则，把校验和业务逻辑分离开，让代码编写更加方便。Spring Validation其实就是对Hibernate Validator进一步的封装，方便在Spring中使用。",{"path":505,"title":506,"description":11},"\u002Fother\u002Fspring-series\u002Fspring\u002Fspring-i18n","Spring - 国际化i18n",{"path":508,"title":509,"description":510},"\u002Fother\u002Fspring-series\u002Fspring\u002Fspring-ioc","Spring - IOC容器","IoC 是 Inversion of Control 的简写，译为“控制反转”，它不是一门技术，而是一种设计思想，是一个重要的面向对象编程法则，能够指导我们如何设计出松耦合、更优良的程序。",{"path":512,"title":513,"description":514},"\u002Fother\u002Fspring-series\u002Fspring\u002Fspring-junit","Spring - 单元测试JUnit","在之前的测试方法中，几乎都能看到以下的两行代码：",{"path":516,"title":517,"description":11},"\u002Fother\u002Fspring-series\u002Fspring\u002Fspring-resources","Spring - 资源操作",{"path":519,"title":520,"description":11},"\u002Fother\u002Fspring-series\u002Fspring\u002Fspring-summarize","Spring - Spring概述",{"path":522,"title":523,"description":11},"\u002Fother\u002Fspring-series\u002Fspring\u002Fspring-transaction","Spring - 事务",{"path":525,"title":526,"description":11},"\u002Fother\u002Fspring-series\u002Fspring\u002Fxml-beans","Spring - 基于XML管理Bean",{"path":528,"title":529,"description":11},"\u002Fother\u002Fspring-series\u002Fspringboot\u002Fspringboot-config","SpringBoot - 配置详解",{"path":531,"title":532,"description":11},"\u002Fother\u002Fspring-series\u002Fspringboot\u002Fspringboot-data","SpringBoot - 数据访问",{"path":534,"title":535,"description":11},"\u002Fother\u002Fspring-series\u002Fspringboot\u002Fspringboot-quickstart","SpringBoot - 快速入门",{"path":537,"title":538,"description":11},"\u002Fother\u002Fspring-series\u002Fspringboot\u002Fspringboot-web","SpringBoot - Web 开发",{"path":540,"title":541,"description":11},"\u002Fother\u002Fspring-series\u002Fspringcloud\u002Fspringcloud-config","SpringCloud - 配置中心",{"path":543,"title":544,"description":11},"\u002Fother\u002Fspring-series\u002Fspringcloud\u002Fspringcloud-discovery","SpringCloud - 服务注册与发现",{"path":546,"title":547,"description":11},"\u002Fother\u002Fspring-series\u002Fspringcloud\u002Fspringcloud-feign","SpringCloud - 服务调用",{"path":549,"title":550,"description":11},"\u002Fother\u002Fspring-series\u002Fspringcloud\u002Fspringcloud-gateway","SpringCloud - 服务网关",{"path":552,"title":553,"description":11},"\u002Fother\u002Fspring-series\u002Fspringcloud\u002Fspringcloud-introduction","SpringCloud - 微服务概述",{"path":555,"title":556,"description":11},"\u002Fother\u002Fspring-series\u002Fspringcloud\u002Fspringcloud-sentinel","SpringCloud - 服务保护",{"path":558,"title":559,"description":11},"\u002Fother\u002Fspring-series\u002Fspringmvc\u002Fspringmvc-databind","SpringMVC - 数据绑定与转换",{"path":561,"title":562,"description":11},"\u002Fother\u002Fspring-series\u002Fspringmvc\u002Fspringmvc-exception","SpringMVC - 异常处理",{"path":564,"title":565,"description":11},"\u002Fother\u002Fspring-series\u002Fspringmvc\u002Fspringmvc-interceptor","SpringMVC - 拦截器",{"path":567,"title":568,"description":11},"\u002Fother\u002Fspring-series\u002Fspringmvc\u002Fspringmvc-introduction","SpringMVC - 简介与环境搭建",{"path":570,"title":571,"description":11},"\u002Fother\u002Fspring-series\u002Fspringmvc\u002Fspringmvc-request","SpringMVC - 请求处理",{"path":573,"title":574,"description":11},"\u002Fother\u002Fspring-series\u002Fspringmvc\u002Fspringmvc-response","SpringMVC - 响应处理",{"path":576,"title":577,"description":578},"\u002Fproject\u002Frocket-leaf\u002Farchitecture","项目架构","Rocket-Leaf 的目录结构、模块划分、数据流向，以及各层之间的依赖关系。",{"path":580,"title":581,"description":582},"\u002Fproject\u002Frocket-leaf\u002Fbackend-layers","后端分层设计","Rocket-Leaf 的 model \u002F rocketmq \u002F service 三层结构，以及服务之间的依赖关系与设计取舍。",{"path":584,"title":585,"description":586},"\u002Fproject\u002Frocket-leaf\u002Fclient-manager","RocketMQ 客户端管理器","AdminClientManager 的多客户端池、默认连接懒加载、自动重连重试的设计与实现。",{"path":588,"title":589,"description":590},"\u002Fproject\u002Frocket-leaf\u002Fencryption","连接信息加密存储","AES-256-GCM + SHA-256 字段级派生密钥的实现，以及如何在不破坏兼容性的前提下为历史明文数据做透明迁移。",{"path":592,"title":593,"description":594},"\u002Fproject\u002Frocket-leaf\u002Ffrontend","前端结构与类型绑定","React + Vite 目录组织、自动生成的 Wails 绑定、api 薄封装与自定义 hooks 的职责划分。",{"path":596,"title":597,"description":598},"\u002Fproject\u002Frocket-leaf","项目简介","Rocket-Leaf 是一款基于 Wails v3 构建的跨平台 RocketMQ 桌面管理客户端，Go 后端 + React 前端。本文档系列拆解它的架构与关键实现。",{"path":600,"title":601,"description":602},"\u002Fproject\u002Frocket-leaf\u002Fwails-v3","Wails v3 入门","Wails v3 的核心概念、Service 绑定机制，以及 Rocket-Leaf 是如何用它把 Go 后端和 React 前端打通的。",{"path":604,"title":605,"description":11},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-basic","Docker - 入门基础",{"path":607,"title":608,"description":609},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-compose","Docker - Compose","在部署应用时，常常使用到不止一个容器，那么在部署容器的时候就需要一个一个进行部署，这样的部署过程也相对来说比较繁琐复杂，也容易出问题，那么有没有一种更为简单的方法呢？",{"path":611,"title":612,"description":613},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-container-connection","Docker - 容器互联","在上一个章节中我们学习了 Docker 容器的端口映射，可以将 Docker 容器和本地以及网络中的端口进行连接起来。",{"path":615,"title":616,"description":11},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-dockerfile","Docker - Dockerfile",{"path":618,"title":619,"description":11},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-helloworld","Docker - HelloWorld",{"path":621,"title":622,"description":11},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-install","Docker - 安装",{"path":624,"title":625,"description":11},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-introduce","Docker - 简介",{"path":627,"title":628,"description":11},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-object","Docker - 镜像、容器、仓库",{"path":630,"title":631,"description":632},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-warehouse","Docker - 仓库管理","仓库是集中存放资源的地方，代码仓库是存放代码的，那么Docker 中的仓库就是存放 Docker 镜像的。",{"path":634,"title":635,"description":636},"\u002Ftutorials\u002Fcloud\u002Fdocker\u002Fdocker-web-containers","Docker - WEB应用实例","在之前的章节中，仅对普通容器进行了演示，但在实际中常常使用到 Docker 容器中的 WEB 应用程序。",{"path":638,"title":639,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-config","Kubernetes - ConfigMap 与 Secret",{"path":641,"title":642,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-helm","Kubernetes - Helm 包管理",{"path":644,"title":645,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-install","Kubernetes - 集群安装",{"path":647,"title":648,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-introduction","Kubernetes - 简介与架构",{"path":650,"title":651,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-kubectl","Kubernetes - kubectl 命令行工具",{"path":653,"title":654,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-monitoring","Kubernetes - 监控与日志",{"path":656,"title":657,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-network-security","Kubernetes - 网络与安全",{"path":659,"title":660,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-service","Kubernetes - Service 与 Ingress",{"path":662,"title":663,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-storage","Kubernetes - 持久化存储",{"path":665,"title":666,"description":11},"\u002Ftutorials\u002Fcloud\u002Fkubernetes\u002Fk8s-workload","Kubernetes - 工作负载资源",{"path":668,"title":669,"description":11},"\u002Ftutorials\u002Fcloud\u002Flinux\u002Flinux-bash","Linux - Bash 基础语法",{"path":671,"title":672,"description":11},"\u002Ftutorials\u002Fcloud\u002Flinux\u002Flinux-file-directory","Linux - 文件与目录操作",{"path":674,"title":675,"description":11},"\u002Ftutorials\u002Fcloud\u002Flinux\u002Flinux-network","Linux - 网络配置",{"path":677,"title":678,"description":11},"\u002Ftutorials\u002Fcloud\u002Flinux\u002Flinux-package","Linux - 软件包管理",{"path":680,"title":681,"description":11},"\u002Ftutorials\u002Fcloud\u002Flinux\u002Flinux-process","Linux - 进程管理",{"path":683,"title":684,"description":11},"\u002Ftutorials\u002Fcloud\u002Flinux\u002Flinux-scripts","Linux - 常用脚本示例",{"path":686,"title":687,"description":11},"\u002Ftutorials\u002Fcloud\u002Flinux\u002Flinux-service","Linux - 服务管理",{"path":689,"title":690,"description":11},"\u002Ftutorials\u002Fcloud\u002Flinux\u002Flinux-user-permission","Linux - 用户与权限管理",{"path":692,"title":693,"description":11},"\u002Ftutorials\u002Fcloud\u002Fnginx\u002Fnginx-https","Nginx - HTTPS 配置",{"path":695,"title":696,"description":11},"\u002Ftutorials\u002Fcloud\u002Fnginx\u002Fnginx-install","Nginx - 安装与配置",{"path":698,"title":699,"description":11},"\u002Ftutorials\u002Fcloud\u002Fnginx\u002Fnginx-loadbalance","Nginx - 负载均衡",{"path":701,"title":702,"description":11},"\u002Ftutorials\u002Fcloud\u002Fnginx\u002Fnginx-optimization","Nginx - 性能优化",{"path":704,"title":705,"description":11},"\u002Ftutorials\u002Fcloud\u002Fnginx\u002Fnginx-proxy","Nginx - 反向代理",{"path":707,"title":708,"description":11},"\u002Ftutorials\u002Fcloud\u002Fnginx\u002Fnginx-static","Nginx - 静态资源服务",{"path":710,"title":711,"description":11},"\u002Ftutorials\u002Fcloud\u002Fnginx\u002Fnginx-vhost","Nginx - 虚拟主机配置",{"path":713,"title":714,"description":715},"\u002Ftutorials\u002Fdatabase\u002Fmysql\u002Fmysql-architecture","MySQL 高可用架构","主从复制、读写分离、分库分表。",{"path":717,"title":718,"description":719},"\u002Ftutorials\u002Fdatabase\u002Fmysql\u002Fmysql-index","MySQL 索引","索引是帮助 MySQL 高效获取数据的有序数据结构。",{"path":721,"title":722,"description":723},"\u002Ftutorials\u002Fdatabase\u002Fmysql\u002Fmysql-lock","MySQL 锁","锁用于解决并发访问时的数据一致性问题。",{"path":725,"title":726,"description":727},"\u002Ftutorials\u002Fdatabase\u002Fmysql\u002Fmysql-optimize","MySQL 性能优化","SQL 优化是后端开发必备技能。",{"path":729,"title":730,"description":731},"\u002Ftutorials\u002Fdatabase\u002Fmysql\u002Fmysql-transaction","MySQL 事务","事务是一组不可分割的操作，要么全部成功，要么全部失败。",{"path":733,"title":734,"description":735},"\u002Ftutorials\u002Fdatabase\u002Fmysql\u002Fsql-advanced","SQL 进阶","多表查询、子查询、函数、视图、存储过程。",{"path":737,"title":738,"description":739},"\u002Ftutorials\u002Fdatabase\u002Fmysql\u002Fsql-basic","SQL 基础","SQL（Structured Query 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byte",[978,1180,1181],{"class":991},"[] buffer ",[978,1183,996],{"class":995},[978,1185,999],{"class":995},[978,1187,1188],{"class":995}," byte",[978,1190,1191],{"class":991},"[",[978,1193,1194],{"class":1061},"1024",[978,1196,1197],{"class":991},"];\n",[978,1199,1201,1204],{"class":980,"line":1200},9,[978,1202,1203],{"class":995},"            int",[978,1205,1206],{"class":991}," len;\n",[978,1208,1210,1213,1216,1218,1221,1224,1227,1230,1233,1236],{"class":980,"line":1209},10,[978,1211,1212],{"class":995},"            while",[978,1214,1215],{"class":991}," ((len ",[978,1217,996],{"class":995},[978,1219,1220],{"class":991}," bis.",[978,1222,1223],{"class":1002},"read",[978,1225,1226],{"class":991},"(buffer)) ",[978,1228,1229],{"class":995},"!=",[978,1231,1232],{"class":995}," -",[978,1234,1235],{"class":1061},"1",[978,1237,1134],{"class":991},[978,1239,1241,1244,1247,1249,1251,1254,1257,1260],{"class":980,"line":1240},11,[978,1242,1243],{"class":991},"                System.out.",[978,1245,1246],{"class":1002},"print",[978,1248,1006],{"class":991},[978,1250,1009],{"class":995},[978,1252,1253],{"class":1002}," String",[978,1255,1256],{"class":991},"(buffer, ",[978,1258,1259],{"class":1061},"0",[978,1261,1262],{"class":991},", len));\n",[978,1264,1266],{"class":980,"line":1265},12,[978,1267,1268],{"class":991},"            }\n",[978,1270,1272,1275,1278,1281,1284],{"class":980,"line":1271},13,[978,1273,1274],{"class":991},"        } ",[978,1276,1277],{"class":995},"catch",[978,1279,1280],{"class":991}," (IOException ",[978,1282,1283],{"class":1130},"e",[978,1285,1134],{"class":991},[978,1287,1289,1292,1295],{"class":980,"line":1288},14,[978,1290,1291],{"class":991},"            e.",[978,1293,1294],{"class":1002},"printStackTrace",[978,1296,1297],{"class":991},"();\n",[978,1299,1301],{"class":980,"line":1300},15,[978,1302,1303],{"class":991},"        }\n",[978,1305,1307],{"class":980,"line":1306},16,[978,1308,1309],{"class":991},"    }\n",[978,1311,1313],{"class":980,"line":1312},17,[978,1314,1315],{"class":991},"}\n",[895,1317,1319],{"id":1318},"bufferedoutputstream-字节缓冲输出流","BufferedOutputStream 字节缓冲输出流",[967,1321,969],{"id":1322},"构造方法-1",[902,1324,1326],{"className":972,"code":1325,"language":974,"meta":11,"style":11},"BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(\"test.txt\"));\nBufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(\"test.txt\"), 16384);\n",[909,1327,1328,1353],{"__ignoreMap":11},[978,1329,1330,1333,1335,1337,1340,1342,1344,1347,1349,1351],{"class":980,"line":981},[978,1331,1332],{"class":991},"BufferedOutputStream bos ",[978,1334,996],{"class":995},[978,1336,999],{"class":995},[978,1338,1339],{"class":1002}," BufferedOutputStream",[978,1341,1006],{"class":991},[978,1343,1009],{"class":995},[978,1345,1346],{"class":1002}," FileOutputStream",[978,1348,1006],{"class":991},[978,1350,1018],{"class":1017},[978,1352,1021],{"class":991},[978,1354,1355,1357,1359,1361,1363,1365,1367,1369,1371,1373,1375,1377],{"class":980,"line":988},[978,1356,1332],{"class":991},[978,1358,996],{"class":995},[978,1360,999],{"class":995},[978,1362,1339],{"class":1002},[978,1364,1006],{"class":991},[978,1366,1009],{"class":995},[978,1368,1346],{"class":1002},[978,1370,1006],{"class":991},[978,1372,1018],{"class":1017},[978,1374,1058],{"class":991},[978,1376,1062],{"class":1061},[978,1378,1065],{"class":991},[967,1380,1068],{"id":1381},"使用示例-1",[902,1383,1385],{"className":972,"code":1384,"language":974,"meta":11,"style":11},"try (BufferedOutputStream bos = new BufferedOutputStream(\n        new FileOutputStream(\"output.txt\"))) {\n    \n    String content = \"Hello, Buffered Stream!\";\n    bos.write(content.getBytes());\n    \u002F\u002F 不需要手动 flush，close 时会自动 flush\n} catch (IOException e) {\n    e.printStackTrace();\n}\n",[909,1386,1387,1403,1417,1422,1434,1451,1456,1469,1478],{"__ignoreMap":11},[978,1388,1389,1392,1395,1397,1399,1401],{"class":980,"line":981},[978,1390,1391],{"class":995},"try",[978,1393,1394],{"class":991}," (BufferedOutputStream bos ",[978,1396,996],{"class":995},[978,1398,999],{"class":995},[978,1400,1339],{"class":1002},[978,1402,1151],{"class":991},[978,1404,1405,1408,1410,1412,1415],{"class":980,"line":988},[978,1406,1407],{"class":995},"        new",[978,1409,1346],{"class":1002},[978,1411,1006],{"class":991},[978,1413,1414],{"class":1017},"\"output.txt\"",[978,1416,1166],{"class":991},[978,1418,1419],{"class":980,"line":1024},[978,1420,1421],{"class":991},"    \n",[978,1423,1424,1427,1429,1432],{"class":980,"line":1031},[978,1425,1426],{"class":991},"    String content ",[978,1428,996],{"class":995},[978,1430,1431],{"class":1017}," \"Hello, Buffered Stream!\"",[978,1433,1087],{"class":991},[978,1435,1436,1439,1442,1445,1448],{"class":980,"line":1037},[978,1437,1438],{"class":991},"    bos.",[978,1440,1441],{"class":1002},"write",[978,1443,1444],{"class":991},"(content.",[978,1446,1447],{"class":1002},"getBytes",[978,1449,1450],{"class":991},"());\n",[978,1452,1453],{"class":980,"line":1154},[978,1454,1455],{"class":984},"    \u002F\u002F 不需要手动 flush，close 时会自动 flush\n",[978,1457,1458,1461,1463,1465,1467],{"class":980,"line":1169},[978,1459,1460],{"class":991},"} ",[978,1462,1277],{"class":995},[978,1464,1280],{"class":991},[978,1466,1283],{"class":1130},[978,1468,1134],{"class":991},[978,1470,1471,1474,1476],{"class":980,"line":1175},[978,1472,1473],{"class":991},"    e.",[978,1475,1294],{"class":1002},[978,1477,1297],{"class":991},[978,1479,1480],{"class":980,"line":1200},[978,1481,1315],{"class":991},[895,1483,1485],{"id":1484},"bufferedreader-字符缓冲输入流","BufferedReader 字符缓冲输入流",[892,1487,1488,1489,1492],{},"提供 ",[909,1490,1491],{},"readLine()"," 方法，可以逐行读取。",[967,1494,969],{"id":1495},"构造方法-2",[902,1497,1499],{"className":972,"code":1498,"language":974,"meta":11,"style":11},"BufferedReader br = new BufferedReader(new FileReader(\"test.txt\"));\nBufferedReader br = new BufferedReader(new FileReader(\"test.txt\"), 16384);\n",[909,1500,1501,1526],{"__ignoreMap":11},[978,1502,1503,1506,1508,1510,1513,1515,1517,1520,1522,1524],{"class":980,"line":981},[978,1504,1505],{"class":991},"BufferedReader br ",[978,1507,996],{"class":995},[978,1509,999],{"class":995},[978,1511,1512],{"class":1002}," BufferedReader",[978,1514,1006],{"class":991},[978,1516,1009],{"class":995},[978,1518,1519],{"class":1002}," FileReader",[978,1521,1006],{"class":991},[978,1523,1018],{"class":1017},[978,1525,1021],{"class":991},[978,1527,1528,1530,1532,1534,1536,1538,1540,1542,1544,1546,1548,1550],{"class":980,"line":988},[978,1529,1505],{"class":991},[978,1531,996],{"class":995},[978,1533,999],{"class":995},[978,1535,1512],{"class":1002},[978,1537,1006],{"class":991},[978,1539,1009],{"class":995},[978,1541,1519],{"class":1002},[978,1543,1006],{"class":991},[978,1545,1018],{"class":1017},[978,1547,1058],{"class":991},[978,1549,1062],{"class":1061},[978,1551,1065],{"class":991},[967,1553,1554],{"id":1554},"逐行读取",[902,1556,1558],{"className":972,"code":1557,"language":974,"meta":11,"style":11},"import java.io.*;\n\npublic class BufferedReaderDemo {\n    public static void main(String[] args) {\n        try (BufferedReader br = new BufferedReader(new FileReader(\"test.txt\"))) {\n            String line;\n            int lineNumber = 0;\n            while ((line = br.readLine()) != null) {\n                lineNumber++;\n                System.out.println(lineNumber + \": \" + line);\n            }\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}\n",[909,1559,1560,1570,1574,1585,1605,1630,1635,1649,1674,1684,1706,1710,1722,1730,1734,1738],{"__ignoreMap":11},[978,1561,1562,1564,1566,1568],{"class":980,"line":981},[978,1563,1078],{"class":995},[978,1565,1081],{"class":991},[978,1567,1084],{"class":1061},[978,1569,1087],{"class":991},[978,1571,1572],{"class":980,"line":988},[978,1573,1028],{"emptyLinePlaceholder":1027},[978,1575,1576,1578,1580,1583],{"class":980,"line":1024},[978,1577,1096],{"class":995},[978,1579,1099],{"class":995},[978,1581,1582],{"class":1002}," BufferedReaderDemo",[978,1584,1105],{"class":991},[978,1586,1587,1589,1591,1593,1595,1597,1599,1601,1603],{"class":980,"line":1031},[978,1588,1110],{"class":995},[978,1590,1113],{"class":995},[978,1592,1116],{"class":995},[978,1594,1119],{"class":1002},[978,1596,1006],{"class":991},[978,1598,1124],{"class":995},[978,1600,1127],{"class":991},[978,1602,1131],{"class":1130},[978,1604,1134],{"class":991},[978,1606,1607,1609,1612,1614,1616,1618,1620,1622,1624,1626,1628],{"class":980,"line":1037},[978,1608,1139],{"class":995},[978,1610,1611],{"class":991}," (BufferedReader br ",[978,1613,996],{"class":995},[978,1615,999],{"class":995},[978,1617,1512],{"class":1002},[978,1619,1006],{"class":991},[978,1621,1009],{"class":995},[978,1623,1519],{"class":1002},[978,1625,1006],{"class":991},[978,1627,1018],{"class":1017},[978,1629,1166],{"class":991},[978,1631,1632],{"class":980,"line":1154},[978,1633,1634],{"class":991},"            String line;\n",[978,1636,1637,1639,1642,1644,1647],{"class":980,"line":1169},[978,1638,1203],{"class":995},[978,1640,1641],{"class":991}," lineNumber ",[978,1643,996],{"class":995},[978,1645,1646],{"class":1061}," 0",[978,1648,1087],{"class":991},[978,1650,1651,1653,1656,1658,1661,1664,1667,1669,1672],{"class":980,"line":1175},[978,1652,1212],{"class":995},[978,1654,1655],{"class":991}," ((line ",[978,1657,996],{"class":995},[978,1659,1660],{"class":991}," br.",[978,1662,1663],{"class":1002},"readLine",[978,1665,1666],{"class":991},"()) ",[978,1668,1229],{"class":995},[978,1670,1671],{"class":1061}," null",[978,1673,1134],{"class":991},[978,1675,1676,1679,1682],{"class":980,"line":1200},[978,1677,1678],{"class":991},"                lineNumber",[978,1680,1681],{"class":995},"++",[978,1683,1087],{"class":991},[978,1685,1686,1688,1691,1694,1697,1700,1703],{"class":980,"line":1209},[978,1687,1243],{"class":991},[978,1689,1690],{"class":1002},"println",[978,1692,1693],{"class":991},"(lineNumber ",[978,1695,1696],{"class":995},"+",[978,1698,1699],{"class":1017}," \": \"",[978,1701,1702],{"class":995}," +",[978,1704,1705],{"class":991}," line);\n",[978,1707,1708],{"class":980,"line":1240},[978,1709,1268],{"class":991},[978,1711,1712,1714,1716,1718,1720],{"class":980,"line":1265},[978,1713,1274],{"class":991},[978,1715,1277],{"class":995},[978,1717,1280],{"class":991},[978,1719,1283],{"class":1130},[978,1721,1134],{"class":991},[978,1723,1724,1726,1728],{"class":980,"line":1271},[978,1725,1291],{"class":991},[978,1727,1294],{"class":1002},[978,1729,1297],{"class":991},[978,1731,1732],{"class":980,"line":1288},[978,1733,1303],{"class":991},[978,1735,1736],{"class":980,"line":1300},[978,1737,1309],{"class":991},[978,1739,1740],{"class":980,"line":1306},[978,1741,1315],{"class":991},[967,1743,1745],{"id":1744},"读取所有行jdk-8","读取所有行（JDK 8+）",[902,1747,1749],{"className":972,"code":1748,"language":974,"meta":11,"style":11},"try (BufferedReader br = new BufferedReader(new FileReader(\"test.txt\"))) {\n    \u002F\u002F 使用 Stream 读取所有行\n    br.lines().forEach(System.out::println);\n} catch (IOException e) {\n    e.printStackTrace();\n}\n",[909,1750,1751,1775,1780,1803,1815,1823],{"__ignoreMap":11},[978,1752,1753,1755,1757,1759,1761,1763,1765,1767,1769,1771,1773],{"class":980,"line":981},[978,1754,1391],{"class":995},[978,1756,1611],{"class":991},[978,1758,996],{"class":995},[978,1760,999],{"class":995},[978,1762,1512],{"class":1002},[978,1764,1006],{"class":991},[978,1766,1009],{"class":995},[978,1768,1519],{"class":1002},[978,1770,1006],{"class":991},[978,1772,1018],{"class":1017},[978,1774,1166],{"class":991},[978,1776,1777],{"class":980,"line":988},[978,1778,1779],{"class":984},"    \u002F\u002F 使用 Stream 读取所有行\n",[978,1781,1782,1785,1788,1791,1794,1797,1800],{"class":980,"line":1024},[978,1783,1784],{"class":991},"    br.",[978,1786,1787],{"class":1002},"lines",[978,1789,1790],{"class":991},"().",[978,1792,1793],{"class":1002},"forEach",[978,1795,1796],{"class":991},"(System.out",[978,1798,1799],{"class":995},"::",[978,1801,1802],{"class":991},"println);\n",[978,1804,1805,1807,1809,1811,1813],{"class":980,"line":1031},[978,1806,1460],{"class":991},[978,1808,1277],{"class":995},[978,1810,1280],{"class":991},[978,1812,1283],{"class":1130},[978,1814,1134],{"class":991},[978,1816,1817,1819,1821],{"class":980,"line":1037},[978,1818,1473],{"class":991},[978,1820,1294],{"class":1002},[978,1822,1297],{"class":991},[978,1824,1825],{"class":980,"line":1154},[978,1826,1315],{"class":991},[967,1828,1830],{"id":1829},"收集为-list","收集为 List",[902,1832,1834],{"className":972,"code":1833,"language":974,"meta":11,"style":11},"import java.util.List;\nimport java.util.stream.Collectors;\n\ntry (BufferedReader br = new BufferedReader(new FileReader(\"test.txt\"))) {\n    List\u003CString> lines = br.lines().collect(Collectors.toList());\n    lines.forEach(System.out::println);\n} catch (IOException e) {\n    e.printStackTrace();\n}\n",[909,1835,1836,1843,1850,1854,1878,1907,1920,1932,1940],{"__ignoreMap":11},[978,1837,1838,1840],{"class":980,"line":981},[978,1839,1078],{"class":995},[978,1841,1842],{"class":991}," java.util.List;\n",[978,1844,1845,1847],{"class":980,"line":988},[978,1846,1078],{"class":995},[978,1848,1849],{"class":991}," java.util.stream.Collectors;\n",[978,1851,1852],{"class":980,"line":1024},[978,1853,1028],{"emptyLinePlaceholder":1027},[978,1855,1856,1858,1860,1862,1864,1866,1868,1870,1872,1874,1876],{"class":980,"line":1031},[978,1857,1391],{"class":995},[978,1859,1611],{"class":991},[978,1861,996],{"class":995},[978,1863,999],{"class":995},[978,1865,1512],{"class":1002},[978,1867,1006],{"class":991},[978,1869,1009],{"class":995},[978,1871,1519],{"class":1002},[978,1873,1006],{"class":991},[978,1875,1018],{"class":1017},[978,1877,1166],{"class":991},[978,1879,1880,1883,1885,1888,1890,1892,1894,1896,1899,1902,1905],{"class":980,"line":1037},[978,1881,1882],{"class":991},"    List\u003C",[978,1884,1124],{"class":995},[978,1886,1887],{"class":991},"> lines ",[978,1889,996],{"class":995},[978,1891,1660],{"class":991},[978,1893,1787],{"class":1002},[978,1895,1790],{"class":991},[978,1897,1898],{"class":1002},"collect",[978,1900,1901],{"class":991},"(Collectors.",[978,1903,1904],{"class":1002},"toList",[978,1906,1450],{"class":991},[978,1908,1909,1912,1914,1916,1918],{"class":980,"line":1154},[978,1910,1911],{"class":991},"    lines.",[978,1913,1793],{"class":1002},[978,1915,1796],{"class":991},[978,1917,1799],{"class":995},[978,1919,1802],{"class":991},[978,1921,1922,1924,1926,1928,1930],{"class":980,"line":1169},[978,1923,1460],{"class":991},[978,1925,1277],{"class":995},[978,1927,1280],{"class":991},[978,1929,1283],{"class":1130},[978,1931,1134],{"class":991},[978,1933,1934,1936,1938],{"class":980,"line":1175},[978,1935,1473],{"class":991},[978,1937,1294],{"class":1002},[978,1939,1297],{"class":991},[978,1941,1942],{"class":980,"line":1200},[978,1943,1315],{"class":991},[895,1945,1947],{"id":1946},"bufferedwriter-字符缓冲输出流","BufferedWriter 字符缓冲输出流",[892,1949,1488,1950,1953],{},[909,1951,1952],{},"newLine()"," 方法，写入系统换行符。",[967,1955,969],{"id":1956},"构造方法-3",[902,1958,1960],{"className":972,"code":1959,"language":974,"meta":11,"style":11},"BufferedWriter bw = new BufferedWriter(new FileWriter(\"test.txt\"));\nBufferedWriter bw = new BufferedWriter(new FileWriter(\"test.txt\"), 16384);\n",[909,1961,1962,1987],{"__ignoreMap":11},[978,1963,1964,1967,1969,1971,1974,1976,1978,1981,1983,1985],{"class":980,"line":981},[978,1965,1966],{"class":991},"BufferedWriter bw ",[978,1968,996],{"class":995},[978,1970,999],{"class":995},[978,1972,1973],{"class":1002}," BufferedWriter",[978,1975,1006],{"class":991},[978,1977,1009],{"class":995},[978,1979,1980],{"class":1002}," FileWriter",[978,1982,1006],{"class":991},[978,1984,1018],{"class":1017},[978,1986,1021],{"class":991},[978,1988,1989,1991,1993,1995,1997,1999,2001,2003,2005,2007,2009,2011],{"class":980,"line":988},[978,1990,1966],{"class":991},[978,1992,996],{"class":995},[978,1994,999],{"class":995},[978,1996,1973],{"class":1002},[978,1998,1006],{"class":991},[978,2000,1009],{"class":995},[978,2002,1980],{"class":1002},[978,2004,1006],{"class":991},[978,2006,1018],{"class":1017},[978,2008,1058],{"class":991},[978,2010,1062],{"class":1061},[978,2012,1065],{"class":991},[967,2014,1068],{"id":2015},"使用示例-2",[902,2017,2019],{"className":972,"code":2018,"language":974,"meta":11,"style":11},"import java.io.*;\n\npublic class BufferedWriterDemo {\n    public static void main(String[] args) {\n        try (BufferedWriter bw = new BufferedWriter(new FileWriter(\"output.txt\"))) {\n            bw.write(\"第一行内容\");\n            bw.newLine();  \u002F\u002F 写入换行符\n            bw.write(\"第二行内容\");\n            bw.newLine();\n            bw.write(\"第三行内容\");\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}\n",[909,2020,2021,2031,2035,2046,2066,2091,2105,2118,2131,2139,2152,2164,2172,2176,2180],{"__ignoreMap":11},[978,2022,2023,2025,2027,2029],{"class":980,"line":981},[978,2024,1078],{"class":995},[978,2026,1081],{"class":991},[978,2028,1084],{"class":1061},[978,2030,1087],{"class":991},[978,2032,2033],{"class":980,"line":988},[978,2034,1028],{"emptyLinePlaceholder":1027},[978,2036,2037,2039,2041,2044],{"class":980,"line":1024},[978,2038,1096],{"class":995},[978,2040,1099],{"class":995},[978,2042,2043],{"class":1002}," BufferedWriterDemo",[978,2045,1105],{"class":991},[978,2047,2048,2050,2052,2054,2056,2058,2060,2062,2064],{"class":980,"line":1031},[978,2049,1110],{"class":995},[978,2051,1113],{"class":995},[978,2053,1116],{"class":995},[978,2055,1119],{"class":1002},[978,2057,1006],{"class":991},[978,2059,1124],{"class":995},[978,2061,1127],{"class":991},[978,2063,1131],{"class":1130},[978,2065,1134],{"class":991},[978,2067,2068,2070,2073,2075,2077,2079,2081,2083,2085,2087,2089],{"class":980,"line":1037},[978,2069,1139],{"class":995},[978,2071,2072],{"class":991}," (BufferedWriter bw ",[978,2074,996],{"class":995},[978,2076,999],{"class":995},[978,2078,1973],{"class":1002},[978,2080,1006],{"class":991},[978,2082,1009],{"class":995},[978,2084,1980],{"class":1002},[978,2086,1006],{"class":991},[978,2088,1414],{"class":1017},[978,2090,1166],{"class":991},[978,2092,2093,2096,2098,2100,2103],{"class":980,"line":1154},[978,2094,2095],{"class":991},"            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写入换行符\n",[978,2119,2120,2122,2124,2126,2129],{"class":980,"line":1175},[978,2121,2095],{"class":991},[978,2123,1441],{"class":1002},[978,2125,1006],{"class":991},[978,2127,2128],{"class":1017},"\"第二行内容\"",[978,2130,1065],{"class":991},[978,2132,2133,2135,2137],{"class":980,"line":1200},[978,2134,2095],{"class":991},[978,2136,2111],{"class":1002},[978,2138,1297],{"class":991},[978,2140,2141,2143,2145,2147,2150],{"class":980,"line":1209},[978,2142,2095],{"class":991},[978,2144,1441],{"class":1002},[978,2146,1006],{"class":991},[978,2148,2149],{"class":1017},"\"第三行内容\"",[978,2151,1065],{"class":991},[978,2153,2154,2156,2158,2160,2162],{"class":980,"line":1240},[978,2155,1274],{"class":991},[978,2157,1277],{"class":995},[978,2159,1280],{"class":991},[978,2161,1283],{"class":1130},[978,2163,1134],{"class":991},[978,2165,2166,2168,2170],{"class":980,"line":1265},[978,2167,1291],{"class":991},[978,2169,1294],{"class":1002},[978,2171,1297],{"class":991},[978,2173,2174],{"class":980,"line":1271},[978,2175,1303],{"class":991},[978,2177,2178],{"class":980,"line":1288},[978,2179,1309],{"class":991},[978,2181,2182],{"class":980,"line":1300},[978,2183,1315],{"class":991},[895,2185,2186],{"id":2186},"性能对比",[967,2188,2189],{"id":2189},"测试代码",[902,2191,2193],{"className":972,"code":2192,"language":974,"meta":11,"style":11},"import java.io.*;\n\npublic class PerformanceTest {\n    public static void main(String[] args) throws IOException {\n        String file = \"largefile.txt\";\n        \n        \u002F\u002F 生成测试文件\n        generateTestFile(file, 10_000_000);\n        \n        \u002F\u002F 普通流读取\n        long start1 = System.currentTimeMillis();\n        readWithoutBuffer(file);\n        long time1 = System.currentTimeMillis() - start1;\n        System.out.println(\"普通流耗时：\" + time1 + \"ms\");\n        \n        \u002F\u002F 缓冲流读取\n        long start2 = System.currentTimeMillis();\n        readWithBuffer(file);\n        long time2 = System.currentTimeMillis() - start2;\n        System.out.println(\"缓冲流耗时：\" + time2 + \"ms\");\n    }\n    \n    static void readWithoutBuffer(String file) throws IOException {\n        try (FileInputStream fis = new FileInputStream(file)) {\n            byte[] buffer = new byte[1024];\n            while (fis.read(buffer) != -1) {\n                \u002F\u002F 读取\n            }\n        }\n    }\n    \n    static void readWithBuffer(String file) throws IOException {\n        try (BufferedInputStream bis = new BufferedInputStream(\n                new FileInputStream(file))) {\n            byte[] buffer = new byte[1024];\n            while (bis.read(buffer) != -1) {\n                \u002F\u002F 读取\n            }\n        }\n    }\n    \n    static void generateTestFile(String file, int lines) throws IOException {\n        try (BufferedWriter bw = new BufferedWriter(new FileWriter(file))) {\n            for (int i = 0; i \u003C lines; i++) {\n                bw.write(\"This is line \" + i);\n                bw.newLine();\n            }\n        }\n    }\n}\n",[909,2194,2195,2205,2209,2220,2247,2259,2264,2269,2282,2286,2291,2309,2317,2339,2362,2366,2371,2386,2394,2415,2437,2442,2447,2470,2487,2506,2527,2533,2538,2543,2548,2553,2573,2588,2598,2617,2637,2642,2647,2652,2657,2662,2691,2712,2743,2761,2770,2775,2780,2785],{"__ignoreMap":11},[978,2196,2197,2199,2201,2203],{"class":980,"line":981},[978,2198,1078],{"class":995},[978,2200,1081],{"class":991},[978,2202,1084],{"class":1061},[978,2204,1087],{"class":991},[978,2206,2207],{"class":980,"line":988},[978,2208,1028],{"emptyLinePlaceholder":1027},[978,2210,2211,2213,2215,2218],{"class":980,"line":1024},[978,2212,1096],{"class":995},[978,2214,1099],{"class":995},[978,2216,2217],{"class":1002}," PerformanceTest",[978,2219,1105],{"class":991},[978,2221,2222,2224,2226,2228,2230,2232,2234,2236,2238,2241,2244],{"class":980,"line":1031},[978,2223,1110],{"class":995},[978,2225,1113],{"class":995},[978,2227,1116],{"class":995},[978,2229,1119],{"class":1002},[978,2231,1006],{"class":991},[978,2233,1124],{"class":995},[978,2235,1127],{"class":991},[978,2237,1131],{"class":1130},[978,2239,2240],{"class":991},") ",[978,2242,2243],{"class":995},"throws",[978,2245,2246],{"class":991}," IOException {\n",[978,2248,2249,2252,2254,2257],{"class":980,"line":1037},[978,2250,2251],{"class":991},"        String file ",[978,2253,996],{"class":995},[978,2255,2256],{"class":1017}," \"largefile.txt\"",[978,2258,1087],{"class":991},[978,2260,2261],{"class":980,"line":1154},[978,2262,2263],{"class":991},"        \n",[978,2265,2266],{"class":980,"line":1169},[978,2267,2268],{"class":984},"        \u002F\u002F 生成测试文件\n",[978,2270,2271,2274,2277,2280],{"class":980,"line":1175},[978,2272,2273],{"class":1002},"        generateTestFile",[978,2275,2276],{"class":991},"(file, ",[978,2278,2279],{"class":1061},"10_000_000",[978,2281,1065],{"class":991},[978,2283,2284],{"class":980,"line":1200},[978,2285,2263],{"class":991},[978,2287,2288],{"class":980,"line":1209},[978,2289,2290],{"class":984},"        \u002F\u002F 普通流读取\n",[978,2292,2293,2296,2299,2301,2304,2307],{"class":980,"line":1240},[978,2294,2295],{"class":995},"        long",[978,2297,2298],{"class":991}," start1 ",[978,2300,996],{"class":995},[978,2302,2303],{"class":991}," System.",[978,2305,2306],{"class":1002},"currentTimeMillis",[978,2308,1297],{"class":991},[978,2310,2311,2314],{"class":980,"line":1265},[978,2312,2313],{"class":1002},"        readWithoutBuffer",[978,2315,2316],{"class":991},"(file);\n",[978,2318,2319,2321,2324,2326,2328,2330,2333,2336],{"class":980,"line":1271},[978,2320,2295],{"class":995},[978,2322,2323],{"class":991}," time1 ",[978,2325,996],{"class":995},[978,2327,2303],{"class":991},[978,2329,2306],{"class":1002},[978,2331,2332],{"class":991},"() ",[978,2334,2335],{"class":995},"-",[978,2337,2338],{"class":991}," start1;\n",[978,2340,2341,2344,2346,2348,2351,2353,2355,2357,2360],{"class":980,"line":1288},[978,2342,2343],{"class":991},"        System.out.",[978,2345,1690],{"class":1002},[978,2347,1006],{"class":991},[978,2349,2350],{"class":1017},"\"普通流耗时：\"",[978,2352,1702],{"class":995},[978,2354,2323],{"class":991},[978,2356,1696],{"class":995},[978,2358,2359],{"class":1017}," \"ms\"",[978,2361,1065],{"class":991},[978,2363,2364],{"class":980,"line":1300},[978,2365,2263],{"class":991},[978,2367,2368],{"class":980,"line":1306},[978,2369,2370],{"class":984},"        \u002F\u002F 缓冲流读取\n",[978,2372,2373,2375,2378,2380,2382,2384],{"class":980,"line":1312},[978,2374,2295],{"class":995},[978,2376,2377],{"class":991}," start2 ",[978,2379,996],{"class":995},[978,2381,2303],{"class":991},[978,2383,2306],{"class":1002},[978,2385,1297],{"class":991},[978,2387,2389,2392],{"class":980,"line":2388},18,[978,2390,2391],{"class":1002},"        readWithBuffer",[978,2393,2316],{"class":991},[978,2395,2397,2399,2402,2404,2406,2408,2410,2412],{"class":980,"line":2396},19,[978,2398,2295],{"class":995},[978,2400,2401],{"class":991}," time2 ",[978,2403,996],{"class":995},[978,2405,2303],{"class":991},[978,2407,2306],{"class":1002},[978,2409,2332],{"class":991},[978,2411,2335],{"class":995},[978,2413,2414],{"class":991}," start2;\n",[978,2416,2418,2420,2422,2424,2427,2429,2431,2433,2435],{"class":980,"line":2417},20,[978,2419,2343],{"class":991},[978,2421,1690],{"class":1002},[978,2423,1006],{"class":991},[978,2425,2426],{"class":1017},"\"缓冲流耗时：\"",[978,2428,1702],{"class":995},[978,2430,2401],{"class":991},[978,2432,1696],{"class":995},[978,2434,2359],{"class":1017},[978,2436,1065],{"class":991},[978,2438,2440],{"class":980,"line":2439},21,[978,2441,1309],{"class":991},[978,2443,2445],{"class":980,"line":2444},22,[978,2446,1421],{"class":991},[978,2448,2450,2453,2455,2458,2461,2464,2466,2468],{"class":980,"line":2449},23,[978,2451,2452],{"class":995},"    static",[978,2454,1116],{"class":995},[978,2456,2457],{"class":1002}," readWithoutBuffer",[978,2459,2460],{"class":991},"(String 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readWithBuffer",[978,2564,2460],{"class":991},[978,2566,2463],{"class":1130},[978,2568,2240],{"class":991},[978,2570,2243],{"class":995},[978,2572,2246],{"class":991},[978,2574,2576,2578,2580,2582,2584,2586],{"class":980,"line":2575},33,[978,2577,1139],{"class":995},[978,2579,1142],{"class":991},[978,2581,996],{"class":995},[978,2583,999],{"class":995},[978,2585,1003],{"class":1002},[978,2587,1151],{"class":991},[978,2589,2591,2593,2595],{"class":980,"line":2590},34,[978,2592,1157],{"class":995},[978,2594,1012],{"class":1002},[978,2596,2597],{"class":991},"(file))) {\n",[978,2599,2601,2603,2605,2607,2609,2611,2613,2615],{"class":980,"line":2600},35,[978,2602,1178],{"class":995},[978,2604,1181],{"class":991},[978,2606,996],{"class":995},[978,2608,999],{"class":995},[978,2610,1188],{"class":995},[978,2612,1191],{"class":991},[978,2614,1194],{"class":1061},[978,2616,1197],{"class":991},[978,2618,2620,2622,2625,2627,2629,2631,2633,2635],{"class":980,"line":2619},36,[978,2621,1212],{"class":995},[978,2623,2624],{"class":991}," (bis.",[978,2626,1223],{"class":1002},[978,2628,2518],{"class":991},[978,2630,1229],{"class":995},[978,2632,1232],{"class":995},[978,2634,1235],{"class":1061},[978,2636,1134],{"class":991},[978,2638,2640],{"class":980,"line":2639},37,[978,2641,2532],{"class":984},[978,2643,2645],{"class":980,"line":2644},38,[978,2646,1268],{"class":991},[978,2648,2650],{"class":980,"line":2649},39,[978,2651,1303],{"class":991},[978,2653,2655],{"class":980,"line":2654},40,[978,2656,1309],{"class":991},[978,2658,2660],{"class":980,"line":2659},41,[978,2661,1421],{"class":991},[978,2663,2665,2667,2669,2672,2674,2676,2679,2682,2685,2687,2689],{"class":980,"line":2664},42,[978,2666,2452],{"class":995},[978,2668,1116],{"class":995},[978,2670,2671],{"class":1002}," generateTestFile",[978,2673,2460],{"class":991},[978,2675,2463],{"class":1130},[978,2677,2678],{"class":991},", ",[978,2680,2681],{"class":995},"int",[978,2683,2684],{"class":1130}," lines",[978,2686,2240],{"class":991},[978,2688,2243],{"class":995},[978,2690,2246],{"class":991},[978,2692,2694,2696,2698,2700,2702,2704,2706,2708,2710],{"class":980,"line":2693},43,[978,2695,1139],{"class":995},[978,2697,2072],{"class":991},[978,2699,996],{"class":995},[978,2701,999],{"class":995},[978,2703,1973],{"class":1002},[978,2705,1006],{"class":991},[978,2707,1009],{"class":995},[978,2709,1980],{"class":1002},[978,2711,2597],{"class":991},[978,2713,2715,2718,2721,2723,2726,2728,2730,2733,2736,2739,2741],{"class":980,"line":2714},44,[978,2716,2717],{"class":995},"            for",[978,2719,2720],{"class":991}," (",[978,2722,2681],{"class":995},[978,2724,2725],{"class":991}," i ",[978,2727,996],{"class":995},[978,2729,1646],{"class":1061},[978,2731,2732],{"class":991},"; i ",[978,2734,2735],{"class":995},"\u003C",[978,2737,2738],{"class":991}," lines; i",[978,2740,1681],{"class":995},[978,2742,1134],{"class":991},[978,2744,2746,2749,2751,2753,2756,2758],{"class":980,"line":2745},45,[978,2747,2748],{"class":991},"                bw.",[978,2750,1441],{"class":1002},[978,2752,1006],{"class":991},[978,2754,2755],{"class":1017},"\"This is line \"",[978,2757,1702],{"class":995},[978,2759,2760],{"class":991}," i);\n",[978,2762,2764,2766,2768],{"class":980,"line":2763},46,[978,2765,2748],{"class":991},[978,2767,2111],{"class":1002},[978,2769,1297],{"class":991},[978,2771,2773],{"class":980,"line":2772},47,[978,2774,1268],{"class":991},[978,2776,2778],{"class":980,"line":2777},48,[978,2779,1303],{"class":991},[978,2781,2783],{"class":980,"line":2782},49,[978,2784,1309],{"class":991},[978,2786,2788],{"class":980,"line":2787},50,[978,2789,1315],{"class":991},[967,2791,2792],{"id":2792},"性能对比结果",[918,2794,2795,2811],{},[921,2796,2797],{},[924,2798,2799,2802,2805,2808],{},[927,2800,2801],{},"操作",[927,2803,2804],{},"普通流",[927,2806,2807],{},"缓冲流",[927,2809,2810],{},"提升",[937,2812,2813,2827],{},[924,2814,2815,2818,2821,2824],{},[942,2816,2817],{},"读取 10MB 文件",[942,2819,2820],{},"~500ms",[942,2822,2823],{},"~50ms",[942,2825,2826],{},"10x",[924,2828,2829,2832,2835,2838],{},[942,2830,2831],{},"写入 10MB 文件",[942,2833,2834],{},"~600ms",[942,2836,2837],{},"~80ms",[942,2839,2840],{},"7x",[895,2842,2844],{"id":2843},"文件复制缓冲流版","文件复制（缓冲流版）",[967,2846,2847],{"id":2847},"字节缓冲流复制",[902,2849,2851],{"className":972,"code":2850,"language":974,"meta":11,"style":11},"public class BufferedFileCopy {\n    public static void main(String[] args) {\n        String source = \"source.mp4\";\n        String target = \"target.mp4\";\n        \n        try (BufferedInputStream bis = new BufferedInputStream(\n                new FileInputStream(source));\n             BufferedOutputStream bos = new BufferedOutputStream(\n                new FileOutputStream(target))) {\n            \n            byte[] buffer = new byte[8192];\n            int len;\n            while ((len = bis.read(buffer)) != -1) {\n                bos.write(buffer, 0, len);\n            }\n            System.out.println(\"复制完成\");\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}\n",[909,2852,2853,2864,2884,2896,2908,2912,2926,2935,2948,2957,2961,2980,2986,3008,3022,3026,3040,3052,3060,3064,3068],{"__ignoreMap":11},[978,2854,2855,2857,2859,2862],{"class":980,"line":981},[978,2856,1096],{"class":995},[978,2858,1099],{"class":995},[978,2860,2861],{"class":1002}," BufferedFileCopy",[978,2863,1105],{"class":991},[978,2865,2866,2868,2870,2872,2874,2876,2878,2880,2882],{"class":980,"line":988},[978,2867,1110],{"class":995},[978,2869,1113],{"class":995},[978,2871,1116],{"class":995},[978,2873,1119],{"class":1002},[978,2875,1006],{"class":991},[978,2877,1124],{"class":995},[978,2879,1127],{"class":991},[978,2881,1131],{"class":1130},[978,2883,1134],{"class":991},[978,2885,2886,2889,2891,2894],{"class":980,"line":1024},[978,2887,2888],{"class":991},"        String source ",[978,2890,996],{"class":995},[978,2892,2893],{"class":1017}," \"source.mp4\"",[978,2895,1087],{"class":991},[978,2897,2898,2901,2903,2906],{"class":980,"line":1031},[978,2899,2900],{"class":991},"        String target ",[978,2902,996],{"class":995},[978,2904,2905],{"class":1017}," \"target.mp4\"",[978,2907,1087],{"class":991},[978,2909,2910],{"class":980,"line":1037},[978,2911,2263],{"class":991},[978,2913,2914,2916,2918,2920,2922,2924],{"class":980,"line":1154},[978,2915,1139],{"class":995},[978,2917,1142],{"class":991},[978,2919,996],{"class":995},[978,2921,999],{"class":995},[978,2923,1003],{"class":1002},[978,2925,1151],{"class":991},[978,2927,2928,2930,2932],{"class":980,"line":1169},[978,2929,1157],{"class":995},[978,2931,1012],{"class":1002},[978,2933,2934],{"class":991},"(source));\n",[978,2936,2937,2940,2942,2944,2946],{"class":980,"line":1175},[978,2938,2939],{"class":991},"             BufferedOutputStream bos ",[978,2941,996],{"class":995},[978,2943,999],{"class":995},[978,2945,1339],{"class":1002},[978,2947,1151],{"class":991},[978,2949,2950,2952,2954],{"class":980,"line":1200},[978,2951,1157],{"class":995},[978,2953,1346],{"class":1002},[978,2955,2956],{"class":991},"(target))) {\n",[978,2958,2959],{"class":980,"line":1209},[978,2960,1172],{"class":991},[978,2962,2963,2965,2967,2969,2971,2973,2975,2978],{"class":980,"line":1240},[978,2964,1178],{"class":995},[978,2966,1181],{"class":991},[978,2968,996],{"class":995},[978,2970,999],{"class":995},[978,2972,1188],{"class":995},[978,2974,1191],{"class":991},[978,2976,2977],{"class":1061},"8192",[978,2979,1197],{"class":991},[978,2981,2982,2984],{"class":980,"line":1265},[978,2983,1203],{"class":995},[978,2985,1206],{"class":991},[978,2987,2988,2990,2992,2994,2996,2998,3000,3002,3004,3006],{"class":980,"line":1271},[978,2989,1212],{"class":995},[978,2991,1215],{"class":991},[978,2993,996],{"class":995},[978,2995,1220],{"class":991},[978,2997,1223],{"class":1002},[978,2999,1226],{"class":991},[978,3001,1229],{"class":995},[978,3003,1232],{"class":995},[978,3005,1235],{"class":1061},[978,3007,1134],{"class":991},[978,3009,3010,3013,3015,3017,3019],{"class":980,"line":1288},[978,3011,3012],{"class":991},"                bos.",[978,3014,1441],{"class":1002},[978,3016,1256],{"class":991},[978,3018,1259],{"class":1061},[978,3020,3021],{"class":991},", len);\n",[978,3023,3024],{"class":980,"line":1300},[978,3025,1268],{"class":991},[978,3027,3028,3031,3033,3035,3038],{"class":980,"line":1306},[978,3029,3030],{"class":991},"            System.out.",[978,3032,1690],{"class":1002},[978,3034,1006],{"class":991},[978,3036,3037],{"class":1017},"\"复制完成\"",[978,3039,1065],{"class":991},[978,3041,3042,3044,3046,3048,3050],{"class":980,"line":1312},[978,3043,1274],{"class":991},[978,3045,1277],{"class":995},[978,3047,1280],{"class":991},[978,3049,1283],{"class":1130},[978,3051,1134],{"class":991},[978,3053,3054,3056,3058],{"class":980,"line":2388},[978,3055,1291],{"class":991},[978,3057,1294],{"class":1002},[978,3059,1297],{"class":991},[978,3061,3062],{"class":980,"line":2396},[978,3063,1303],{"class":991},[978,3065,3066],{"class":980,"line":2417},[978,3067,1309],{"class":991},[978,3069,3070],{"class":980,"line":2439},[978,3071,1315],{"class":991},[967,3073,3074],{"id":3074},"字符缓冲流复制",[902,3076,3078],{"className":972,"code":3077,"language":974,"meta":11,"style":11},"public class BufferedTextCopy {\n    public static void main(String[] args) {\n        try (BufferedReader br = new BufferedReader(new FileReader(\"source.txt\"));\n             BufferedWriter bw = new BufferedWriter(new FileWriter(\"target.txt\"))) {\n            \n            String line;\n            while ((line = br.readLine()) != null) {\n                bw.write(line);\n                bw.newLine();\n            }\n            System.out.println(\"复制完成\");\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}\n",[909,3079,3080,3091,3111,3136,3160,3164,3168,3188,3197,3205,3209,3221,3233,3241,3245,3249],{"__ignoreMap":11},[978,3081,3082,3084,3086,3089],{"class":980,"line":981},[978,3083,1096],{"class":995},[978,3085,1099],{"class":995},[978,3087,3088],{"class":1002}," BufferedTextCopy",[978,3090,1105],{"class":991},[978,3092,3093,3095,3097,3099,3101,3103,3105,3107,3109],{"class":980,"line":988},[978,3094,1110],{"class":995},[978,3096,1113],{"class":995},[978,3098,1116],{"class":995},[978,3100,1119],{"class":1002},[978,3102,1006],{"class":991},[978,3104,1124],{"class":995},[978,3106,1127],{"class":991},[978,3108,1131],{"class":1130},[978,3110,1134],{"class":991},[978,3112,3113,3115,3117,3119,3121,3123,3125,3127,3129,3131,3134],{"class":980,"line":1024},[978,3114,1139],{"class":995},[978,3116,1611],{"class":991},[978,3118,996],{"class":995},[978,3120,999],{"class":995},[978,3122,1512],{"class":1002},[978,3124,1006],{"class":991},[978,3126,1009],{"class":995},[978,3128,1519],{"class":1002},[978,3130,1006],{"class":991},[978,3132,3133],{"class":1017},"\"source.txt\"",[978,3135,1021],{"class":991},[978,3137,3138,3141,3143,3145,3147,3149,3151,3153,3155,3158],{"class":980,"line":1031},[978,3139,3140],{"class":991},"             BufferedWriter bw ",[978,3142,996],{"class":995},[978,3144,999],{"class":995},[978,3146,1973],{"class":1002},[978,3148,1006],{"class":991},[978,3150,1009],{"class":995},[978,3152,1980],{"class":1002},[978,3154,1006],{"class":991},[978,3156,3157],{"class":1017},"\"target.txt\"",[978,3159,1166],{"class":991},[978,3161,3162],{"class":980,"line":1037},[978,3163,1172],{"class":991},[978,3165,3166],{"class":980,"line":1154},[978,3167,1634],{"class":991},[978,3169,3170,3172,3174,3176,3178,3180,3182,3184,3186],{"class":980,"line":1169},[978,3171,1212],{"class":995},[978,3173,1655],{"class":991},[978,3175,996],{"class":995},[978,3177,1660],{"class":991},[978,3179,1663],{"class":1002},[978,3181,1666],{"class":991},[978,3183,1229],{"class":995},[978,3185,1671],{"class":1061},[978,3187,1134],{"class":991},[978,3189,3190,3192,3194],{"class":980,"line":1175},[978,3191,2748],{"class":991},[978,3193,1441],{"class":1002},[978,3195,3196],{"class":991},"(line);\n",[978,3198,3199,3201,3203],{"class":980,"line":1200},[978,3200,2748],{"class":991},[978,3202,2111],{"class":1002},[978,3204,1297],{"class":991},[978,3206,3207],{"class":980,"line":1209},[978,3208,1268],{"class":991},[978,3210,3211,3213,3215,3217,3219],{"class":980,"line":1240},[978,3212,3030],{"class":991},[978,3214,1690],{"class":1002},[978,3216,1006],{"class":991},[978,3218,3037],{"class":1017},[978,3220,1065],{"class":991},[978,3222,3223,3225,3227,3229,3231],{"class":980,"line":1265},[978,3224,1274],{"class":991},[978,3226,1277],{"class":995},[978,3228,1280],{"class":991},[978,3230,1283],{"class":1130},[978,3232,1134],{"class":991},[978,3234,3235,3237,3239],{"class":980,"line":1271},[978,3236,1291],{"class":991},[978,3238,1294],{"class":1002},[978,3240,1297],{"class":991},[978,3242,3243],{"class":980,"line":1288},[978,3244,1303],{"class":991},[978,3246,3247],{"class":980,"line":1300},[978,3248,1309],{"class":991},[978,3250,3251],{"class":980,"line":1306},[978,3252,1315],{"class":991},[895,3254,3256],{"id":3255},"实战文件排序","实战：文件排序",[892,3258,3259],{},"读取文件内容，排序后写入新文件：",[902,3261,3263],{"className":972,"code":3262,"language":974,"meta":11,"style":11},"import java.io.*;\nimport java.util.*;\n\npublic class FileSorter {\n    public static void main(String[] args) {\n        try (BufferedReader br = new BufferedReader(new FileReader(\"numbers.txt\"));\n             BufferedWriter bw = new BufferedWriter(new FileWriter(\"sorted.txt\"))) {\n            \n            \u002F\u002F 读取所有行\n            List\u003CInteger> numbers = new ArrayList\u003C>();\n            String line;\n            while ((line = br.readLine()) != null) {\n                numbers.add(Integer.parseInt(line.trim()));\n            }\n            \n            \u002F\u002F 排序\n            Collections.sort(numbers);\n            \n            \u002F\u002F 写入结果\n            for (Integer num : numbers) {\n                bw.write(String.valueOf(num));\n                bw.newLine();\n            }\n            System.out.println(\"排序完成\");\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n    }\n}\n",[909,3264,3265,3275,3286,3290,3301,3321,3346,3369,3373,3378,3396,3400,3420,3443,3447,3451,3456,3467,3471,3476,3489,3504,3512,3516,3529,3541,3549,3553,3557],{"__ignoreMap":11},[978,3266,3267,3269,3271,3273],{"class":980,"line":981},[978,3268,1078],{"class":995},[978,3270,1081],{"class":991},[978,3272,1084],{"class":1061},[978,3274,1087],{"class":991},[978,3276,3277,3279,3282,3284],{"class":980,"line":988},[978,3278,1078],{"class":995},[978,3280,3281],{"class":991}," java.util.",[978,3283,1084],{"class":1061},[978,3285,1087],{"class":991},[978,3287,3288],{"class":980,"line":1024},[978,3289,1028],{"emptyLinePlaceholder":1027},[978,3291,3292,3294,3296,3299],{"class":980,"line":1031},[978,3293,1096],{"class":995},[978,3295,1099],{"class":995},[978,3297,3298],{"class":1002}," FileSorter",[978,3300,1105],{"class":991},[978,3302,3303,3305,3307,3309,3311,3313,3315,3317,3319],{"class":980,"line":1037},[978,3304,1110],{"class":995},[978,3306,1113],{"class":995},[978,3308,1116],{"class":995},[978,3310,1119],{"class":1002},[978,3312,1006],{"class":991},[978,3314,1124],{"class":995},[978,3316,1127],{"class":991},[978,3318,1131],{"class":1130},[978,3320,1134],{"class":991},[978,3322,3323,3325,3327,3329,3331,3333,3335,3337,3339,3341,3344],{"class":980,"line":1154},[978,3324,1139],{"class":995},[978,3326,1611],{"class":991},[978,3328,996],{"class":995},[978,3330,999],{"class":995},[978,3332,1512],{"class":1002},[978,3334,1006],{"class":991},[978,3336,1009],{"class":995},[978,3338,1519],{"class":1002},[978,3340,1006],{"class":991},[978,3342,3343],{"class":1017},"\"numbers.txt\"",[978,3345,1021],{"class":991},[978,3347,3348,3350,3352,3354,3356,3358,3360,3362,3364,3367],{"class":980,"line":1169},[978,3349,3140],{"class":991},[978,3351,996],{"class":995},[978,3353,999],{"class":995},[978,3355,1973],{"class":1002},[978,3357,1006],{"class":991},[978,3359,1009],{"class":995},[978,3361,1980],{"class":1002},[978,3363,1006],{"class":991},[978,3365,3366],{"class":1017},"\"sorted.txt\"",[978,3368,1166],{"class":991},[978,3370,3371],{"class":980,"line":1175},[978,3372,1172],{"class":991},[978,3374,3375],{"class":980,"line":1200},[978,3376,3377],{"class":984},"            \u002F\u002F 读取所有行\n",[978,3379,3380,3383,3386,3389,3391,3393],{"class":980,"line":1209},[978,3381,3382],{"class":991},"            List\u003C",[978,3384,3385],{"class":995},"Integer",[978,3387,3388],{"class":991},"> numbers ",[978,3390,996],{"class":995},[978,3392,999],{"class":995},[978,3394,3395],{"class":991}," ArrayList\u003C>();\n",[978,3397,3398],{"class":980,"line":1240},[978,3399,1634],{"class":991},[978,3401,3402,3404,3406,3408,3410,3412,3414,3416,3418],{"class":980,"line":1265},[978,3403,1212],{"class":995},[978,3405,1655],{"class":991},[978,3407,996],{"class":995},[978,3409,1660],{"class":991},[978,3411,1663],{"class":1002},[978,3413,1666],{"class":991},[978,3415,1229],{"class":995},[978,3417,1671],{"class":1061},[978,3419,1134],{"class":991},[978,3421,3422,3425,3428,3431,3434,3437,3440],{"class":980,"line":1271},[978,3423,3424],{"class":991},"                numbers.",[978,3426,3427],{"class":1002},"add",[978,3429,3430],{"class":991},"(Integer.",[978,3432,3433],{"class":1002},"parseInt",[978,3435,3436],{"class":991},"(line.",[978,3438,3439],{"class":1002},"trim",[978,3441,3442],{"class":991},"()));\n",[978,3444,3445],{"class":980,"line":1288},[978,3446,1268],{"class":991},[978,3448,3449],{"class":980,"line":1300},[978,3450,1172],{"class":991},[978,3452,3453],{"class":980,"line":1306},[978,3454,3455],{"class":984},"            \u002F\u002F 排序\n",[978,3457,3458,3461,3464],{"class":980,"line":1312},[978,3459,3460],{"class":991},"            Collections.",[978,3462,3463],{"class":1002},"sort",[978,3465,3466],{"class":991},"(numbers);\n",[978,3468,3469],{"class":980,"line":2388},[978,3470,1172],{"class":991},[978,3472,3473],{"class":980,"line":2396},[978,3474,3475],{"class":984},"            \u002F\u002F 写入结果\n",[978,3477,3478,3480,3483,3486],{"class":980,"line":2417},[978,3479,2717],{"class":995},[978,3481,3482],{"class":991}," (Integer num ",[978,3484,3485],{"class":995},":",[978,3487,3488],{"class":991}," numbers) {\n",[978,3490,3491,3493,3495,3498,3501],{"class":980,"line":2439},[978,3492,2748],{"class":991},[978,3494,1441],{"class":1002},[978,3496,3497],{"class":991},"(String.",[978,3499,3500],{"class":1002},"valueOf",[978,3502,3503],{"class":991},"(num));\n",[978,3505,3506,3508,3510],{"class":980,"line":2444},[978,3507,2748],{"class":991},[978,3509,2111],{"class":1002},[978,3511,1297],{"class":991},[978,3513,3514],{"class":980,"line":2449},[978,3515,1268],{"class":991},[978,3517,3518,3520,3522,3524,3527],{"class":980,"line":2472},[978,3519,3030],{"class":991},[978,3521,1690],{"class":1002},[978,3523,1006],{"class":991},[978,3525,3526],{"class":1017},"\"排序完成\"",[978,3528,1065],{"class":991},[978,3530,3531,3533,3535,3537,3539],{"class":980,"line":2489},[978,3532,1274],{"class":991},[978,3534,1277],{"class":995},[978,3536,1280],{"class":991},[978,3538,1283],{"class":1130},[978,3540,1134],{"class":991},[978,3542,3543,3545,3547],{"class":980,"line":2508},[978,3544,1291],{"class":991},[978,3546,1294],{"class":1002},[978,3548,1297],{"class":991},[978,3550,3551],{"class":980,"line":2529},[978,3552,1303],{"class":991},[978,3554,3555],{"class":980,"line":2535},[978,3556,1309],{"class":991},[978,3558,3559],{"class":980,"line":2540},[978,3560,1315],{"class":991},[895,3562,3564],{"id":3563},"实战统计词频","实战：统计词频",[902,3566,3568],{"className":972,"code":3567,"language":974,"meta":11,"style":11},"import java.io.*;\nimport java.util.*;\n\npublic class WordCounter {\n    public static void main(String[] args) {\n        Map\u003CString, Integer> wordCount = new HashMap\u003C>();\n        \n        try (BufferedReader br = new BufferedReader(new FileReader(\"article.txt\"))) {\n            String line;\n            while ((line = br.readLine()) != null) {\n                \u002F\u002F 分割单词\n                String[] words = line.toLowerCase().split(\"\\\\W+\");\n                for (String word : words) {\n                    if (!word.isEmpty()) {\n                        wordCount.merge(word, 1, Integer::sum);\n                    }\n                }\n            }\n        } catch (IOException e) {\n            e.printStackTrace();\n        }\n        \n        \u002F\u002F 输出结果\n        wordCount.entrySet().stream()\n            .sorted(Map.Entry.\u003CString, Integer>comparingByValue().reversed())\n            .limit(10)\n            .forEach(e -> System.out.println(e.getKey() + \": 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