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按字母分类 ：先介绍一下个人背景，希望能引起提问者的共鸣，再介绍一下我的方法和看法。&br&&br&我自己从高中就是选的文科方向，很早就不学理科的东西了，数学也很差。大学选的是国际政治方向，但是从大学第一年结束开始就自学计算机，现在正在卡内基梅隆读计算机硕士，上一个暑假去谷歌总部实习了三个月，最近签了Airbnb，毕业后去做软件工程师。&br&&br&算起来我从输出第一个Hello world开始，这已经是第五个年头学习计算机了。刚开始的两年，我基本都靠自学，走了&b&很多很多很多弯路&/b&，如果当时能有一个有相似背景，特别是自身连数理基础都很薄弱的人给我讲解一下学习的路径，我就能少走很多弯路，计算机基础想必也比现在扎实。没有良好的指导，导致到现在，即便我已经有能力直接进入业界工作，我依然有某些薄弱地方。&br&&br&--------------------------------------幸福的分割线------------------------------------------&br&&br&答主说从零起步，自学计算机，但是没有交代清楚自己的心态。&br&&br&心态有两种：&br&&br&第一种，是感觉一些计算机的东西特别厉害，比如为啥百度就能搜索东西，怎么写一个Windows操作系统，语音识别的技术感觉很厉害，想自己也做做看。这种心态，比较适合大量的上Coursera的课和看各种30天自制XXX系列书籍。Coursera上的计算机相关课程的内容都比较浅，适合基于兴趣的学习者。30天自制XXX系列书籍也比较适合快速出成果，过一把瘾。这方面我就不展开了。&br&&br&第二种，是想在计算机专业上有所&b&发展&/b&，想在计算机或者互联网行业以&b&技术人员&/b&的角色工作，甚至干出一番事业的心态。我主要分享一下基于第二种心态的科学的学习方法和过程。&br&&br&--------------------------------------幸福的分割线------------------------------------------&br&&br&首先，对于下面介绍的学习步骤，对于每一步，如果学校计算机专业有对应的课程，建议蹭课或者修一个双专业。学习内容的来源多样化是好事情。另外，如果能找到MIT/Stanford/CMU的对应的课程材料，建议跟课程材料而不是只看书。&br&&br&第一阶段&br&&br&Coursera/Udacity/Edx等MOOC网站上选择一门CS101的课程来上，好好的做编程作业。&br&例如：&br&&a href=&///?target=https%3A//www.coursera.org/course/cs101& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://www.&/span&&span class=&visible&&coursera.org/course/cs1&/span&&span class=&invisible&&01&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&br&&a href=&///?target=https%3A//www.edx.org/course/introduction-computer-science-mitx-6-00-1x-6& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&Introduction to Computer Science and Programming Using Python&i class=&icon-external&&&/i&&/a&&br&&a href=&///?target=https%3A///courses/cs101& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://www.&/span&&span class=&visible&&/courses/cs1&/span&&span class=&invisible&&01&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&br&&br&这一阶段主要是初步了解计算机科学，看看是否有兴趣继续钻研。如果这一阶段如果你学不下去，大可以不必继续花时间自学了。&br&&br&cs101通常会有一系列小的编程作业，学完后至少能学会一种编程语言。&br&&br&第二阶段&br&&br&获得对计算机科学的一个初步认识之后，就可以开始学习计算机科学的&b&初级&/b&基础知识了。我个人觉得这一阶段应该学习以下三门课/三个方向。对于每一项，列举的材料至少看一种，相互参照全部看最好。&br&&br&1. 初步理解计算机系统&br&&a href=&///?target=https%3A//www.cs.cmu.edu/%7E213/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&15-213 (18-213/15-513): Introduction to Computer Systems&i class=&icon-external&&&/i&&/a& (卡内基梅隆大学二年级学生专业课，精华在编程作业。所有作业都有本地测试代码，自己单独做没有问题)&br&&a href=&///?target=http%3A///subject/5333562/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&深入理解计算机系统（原书第2版） (豆瓣)&i class=&icon-external&&&/i&&/a&&br&&a href=&///?target=http%3A///subject/3023631/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&Computer Systems (豆瓣)&i class=&icon-external&&&/i&&/a& 上面那本书的英文版&br&&br&这个系列编程语言语言是C。内容涉及诸如计算机的数值表示，多线程和并发，基本的操作系统知识等等。&br&&br&2. 如何构建相对复杂的软件系统，面向对象和软件设计&br&CMU &a href=&///?target=http%3A//www.cs.cmu.edu/%7Echarlie/courses/15-214/2016-spring/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&15-214: Principles of Software System Construction&i class=&icon-external&&&/i&&/a&&br&MIT &a href=&///?target=http%3A//ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-005-elements-of-software-construction-fall-2011/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&Elements of Software Construction&i class=&icon-external&&&/i&&/a&&br&...&br&....&br&..&br&这方面东西也很多，找到一个相似的材料完整的过一遍即可。&br&&br&如果跟了我列举的这门课，需要学会用Java，跟完后可以学会设计模式，设计思想，面向对象等构建较大的软件的基本知识，已经积累大量的编程经验。&br&&br&3. 基本数据结构和初级算法&br&例如: &a href=&///?target=http%3A//www.cs.cmu.edu/%7Ejxc/121.html& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&15-121 Data Structures in Java&i class=&icon-external&&&/i&&/a&&br&&br&这方面的书实在是太多了，你搜一下就有很多经典材料/课程的推荐了。我个人不建议现在就上手大名鼎鼎的 &a href=&///?target=http%3A///subject/1885170/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&算法导论（原书第2版） (豆瓣)&i class=&icon-external&&&/i&&/a&（英文版叫做&Introducation to Algorithms）。对于基础薄弱者来说，这东西不适合做导论。。即便它是Introduction.&br&&br&&br&我觉得这三个部分是第二个步骤的全部了。同样，如果看着看着没了兴趣，不建议继续下一步了，不需要浪费时间继续自学了。但是，如果看着还是很有兴趣，但是有些地方理解的不透彻，没关系，这种情况还是可以跳到下一步的。计算机科学很多地方都是初级知识的重复或者变形，继续学习后面的知识，会不断涉及当前的基础知识的。学着学着就融会贯通了。&br&&br&第三阶段&br&&br&这一阶段开始学习计算机科学的&b&高级&/b&基础知识了。&br&&br&对我来说，高级基础知识只有两块，操作系统(Operating Systems)和算法和高级数据结构(Algorithms and Advanced Data Structure).&br&&br&操作系统，可以跟MIT的操作系统课: &a href=&///?target=https%3A//pdos.csail.mit.edu/6.828/2014/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&6.828 / Fall 2014&i class=&icon-external&&&/i&&/a&&br&跟完之后可以写出一个能跑的小kernel。&br&&br&算法和高级数据结构：&br&首选&a href=&///?target=http%3A///subject/1885170/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&算法导论（原书第2版） (豆瓣)&i class=&icon-external&&&/i&&/a&&br&MIT &a href=&///?target=https%3A//courses.csail.mit.edu/6.851/spring14/index.html& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&Advanced Data Structures (6.851)&i class=&icon-external&&&/i&&/a&&br&&br&同样，这两个领域的材料很多，善用搜索引擎去找。&br&&br&第四阶段&br&&br&这一阶段内容非常的多，都是计算机科学或者软件工程的不同专业方向(Domain Knowledge)。 &br&我这里指的都是入门/导论级别的知识 &br&&br&数据库应用&br&网络应用开发&br&手机应用开发&br&计算机网络&br&并行计算&br&机器学习/数据挖掘/人工智能&br&搜索引擎&br&自然语言处理&br&计算机安全&br&编译器&br&分布式系统&br&...&br&...&br&...&br&&br&这里东西很多了，建议选择3到5个领域，寻找合适的材料去学习。太多了我就不罗列了，真有需要可以私信我。&br&&br&&br&任何人完成了前四个阶段，我个人认为就已经至少具备了计算机专业本科生(CS Major)的平均水平。 真正的计算机专业学生上的课比上面的我说的多，但是很多并不是必须的，并不影响进入业界工作。&br&&br&&br&第五阶段&br&&br&这一阶段可以&b&系统性，深入的&/b&的学习各种领域的东西了，例如&br&如何实现一个严肃的关系型数据库？(Advanced Database Systems)&br&分布式领域的经典理论，问题和挑战有哪些？(Advanced Distributed Systems)&br&常见大数据系统的优劣？(Big Data Systems)&br&编译器如何优化？(Compiler)&br&如何实现一个严肃的操作系统？(Operating Systems)&br&容错的分布式系统 (Fault-tolerant Distributed Systems)&br&各种机器学习 (Machine Learning for Text Mining, Multimedia Machine Learning, Scalable Machine Learning, etc.)&br&存储系统 (Storage Systems)&br&信息检索 (Information Retrieval)&br&...&br&...&br&...&br&&br&这一阶段适合去读一个计算机硕士/博士，或者在业界积累一定的工作经验后进行研究，材料也是有很多，欢迎私信交流。&br&&br&--------------------------------------幸福的分割线------------------------------------------&br&&br&当时我开始自学的时候，举步维艰。自身基础实在是太薄弱了，也以为学习计算机科学就是学习编程语言。花了太多的时间一本一本的看C/C++/JAVA/Python的书籍，浪费了大量的时间。&br&&br&手头还有很多事情要做，但是看到这个问题情不自禁的停下来，花了一个多小时来写。主要就是希望能帮助提问者或者需要这方面经验的人。非科班的人学习计算机专业比较艰难，一方面要应付当前的专业/工作，一方面又缺乏氛围，环境和资源，比较容易半途而废。也许提问者自己最后也会不了了之，但是如果有人看了我的答案，真的获得了帮助，坚持下来，我的付出也就没有白费。&br&&br&当初起步的时候，太艰难了。
先介绍一下个人背景，希望能引起提问者的共鸣，再介绍一下我的方法和看法。 我自己从高中就是选的文科方向，很早就不学理科的东西了，数学也很差。大学选的是国际政治方向，但是从大学第一年结束开始就自学计算机，现在正在卡内基梅隆读计算机硕士，上一个…
一、基础篇1.1 JVM1.1.1. Java内存模型，Java内存管理，Java堆和栈，垃圾回收&blockquote&&p&&a href=&///?target=http%3A//www.jcp.org/en/jsr/detail%3Fid%3D133& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&jcp.org/en/jsr/detail?&/span&&span class=&invisible&&id=133&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A///jmm-faq/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&Java内存模型&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&1.1.2. 了解JVM各种参数及调优1.1.3. 学习使用Java工具&blockquote&&p&&a href=&///?target=http%3A///archives/105& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&jps&i class=&icon-external&&&/i&&/a&, &a href=&///?target=http%3A///archives/110& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&jstack&i class=&icon-external&&&/i&&/a&, &a href=&///?target=http%3A///archives/303& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&jmap&i class=&icon-external&&&/i&&/a&, jconsole, jinfo, jhat, javap, …&/p&&p&&a href=&///?target=http%3A///projects/btrace& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&BTrace — Project Kenai&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//www.crashub.org/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&CRaSH the shell for the Java Platform&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A///taobao/TProfiler& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&taobao/TProfiler · GitHub&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A///CSUG/HouseMD& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&CSUG/HouseMD · GitHub&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A///CSUG/HouseMD& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&http://wiki.cyclopsgroup.org/jmxterm&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A///jlusdy/TBJMap& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&jlusdy/TBJMap · GitHub&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&1.1.4. 学习Java诊断工具&blockquote&&p&&a href=&///?target=http%3A//www.eclipse.org/mat/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&Eclipse Memory Analyzer Open Source Project&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//visualvm.java.net/oqlhelp.html& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&Analyzing a Heap Dump Using Object Query Language (OQL)&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&1.1.5. 自己编写各种outofmemory，stackoverflow程序&blockquote&&p&HeapOutOfMemory&/p&&p&Young OutOfMemory&/p&&p&MethodArea OutOfMemory&/p&&p&ConstantPool OutOfMemory&/p&&p&DirectMemory OutOfMemory&/p&&p&Stack OutOfMemory Stack OverFlow&/p&&/blockquote&1.1.6. 使用工具尝试解决以下问题，并写下总结&blockquote&&p&当一个Java程序响应很慢时如何查找问题 当一个Java程序频繁FullGC时如何解决问题，如何查看垃圾回收日志 当一个Java应用发生OutOfMemory时该如何解决，年轻代、年老代、永久代解决办法不同，导致原因也不同&/p&&/blockquote&1.1.7. 参考资料&blockquote&&p&&a href=&///?target=http%3A///javase/specs/jvms/se7/html/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&The Java(R) Virtual Machine Specification&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//www.cs.umd.edu/%7Epugh/java/memoryModel/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&cs.umd.edu/~pugh/java/m&/span&&span class=&invisible&&emoryModel/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//gee.cs.oswego.edu/dl/jmm/cookbook.html& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&gee.cs.oswego.edu/dl/jm&/span&&span class=&invisible&&m/cookbook.html&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&1.2. Java基础知识1.2.1. 阅读源代码&blockquote&&p&java.lang.String java.lang.Integer`` java.lang.Long java.lang.Enumjava.math.BigDecimaljava.lang.ThreadLocal java.lang.ClassLoader & java.net.URLClassLoader java.util.ArrayList & java.util.LinkedList`` java.util.HashMap & java.util.LinkedHashMap & java.util.TreeMapjava.util.HashSet & java.util.LinkedHashSet & java.util.TreeSet&/p&&/blockquote&1.2.2. 熟悉Java中各种变量类型1.2.3. 熟悉Java String的使用，熟悉String的各种函数1.2.4. 熟悉Java中各种关键字1.2.5. 学会使用List，Map，Stack，Queue，Set&blockquote&&p&上述数据结构的遍历 上述数据结构的使用场景 Java实现对Array/List排序java.uti.Arrays.sort()java.util.Collections.sort() Java实现对List去重 Java实现对List去重，并且需要保留数据原始的出现顺序 Java实现最近最少使用cache，用LinkedHashMap&/p&&/blockquote&1.2.6. Java IO&Java NIO，并学会使用&blockquote&&p&java.io.* java.nio.* nio和reactor设计模式 文件编码，字符集&/p&&/blockquote&1.2.7. Java反射与javassist&blockquote&&p&反射与工厂模式 java.lang.reflect.*&/p&&/blockquote&1.2.8. Java序列化&blockquote&&p&java.io. Serializable 什么是序列化，为什么序列化 序列化与单例模式 google序列化protobuf&/p&&/blockquote&1.2.9. 虚引用，弱引用，软引用&blockquote&&p&java.lang.ref.* 实验这些引用的回收&/p&&/blockquote&1.2.10. 熟悉Java系统属性&blockquote&&p&java.util.Properties&/p&&/blockquote&1.2.11. 熟悉Annotation用法&blockquote&&p&java.lang.annotation.*&/p&&/blockquote&1.2.12. JMS&blockquote&&p&javax.jms.*&/p&&/blockquote&1.2.13. JMX&blockquote&&p&java.lang.management.* javax.management.*&/p&&/blockquote&1.2.14. 泛型和继承，泛型和擦除1.2.15. 自动拆箱装箱与字节码1.2.16. 实现Callback1.2.17. java.lang.Void类使用1.2.18. Java Agent，premain函数&blockquote&&p&java.lang.instrument&/p&&/blockquote&1.2.19. 单元测试&blockquote&&p&Junit，&a href=&///?target=http%3A//junit.org/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&JUnit -
About&i class=&icon-external&&&/i&&/a&&/p&&p&Jmockit，&a href=&///?target=https%3A///p/jmockit/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&/p/jmock&/span&&span class=&invisible&&it/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&djUnit，&a href=&///?target=http%3A//works.dgic.co.jp/djunit/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&works.dgic.co.jp/djunit&/span&&span class=&invisible&&/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&1.2.20. Java实现通过正则表达式提取一段文本中的电子邮件，并将@替换为#输出&blockquote&&p&java.lang.util.regex.*&/p&&/blockquote&1.2.21. 学习使用常用的Java工具库&blockquote&&p&commons.lang, commons.*... guava-libraries netty&/p&&/blockquote&1.2.22. 什么是API&SPI&blockquote&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Application_programming_interface& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/A&/span&&span class=&invisible&&pplication_programming_interface&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Application_programming_interface& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&http://en.wikipedia.org/wiki/Service_provider_interface&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&1.2.23. 参考资料&blockquote&&p&JDK src.zip 源代码&/p&&p&&a href=&///?target=http%3A//openjdk.java.net/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&OpenJDK&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//commons.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&commons.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A///p/guava-libraries/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&/p/guava&/span&&span class=&invisible&&-libraries/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//netty.io/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&netty.io/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A///questions/2954372/difference-between-spi-and-api& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/quest&/span&&span class=&invisible&&ions/2954372/difference-between-spi-and-api&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A///questions//how-to-implement-the-api-spi-pattern-in-java& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/quest&/span&&span class=&invisible&&ions//how-to-implement-the-api-spi-pattern-in-java&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&1.3. Java并发编程1.3.1. 阅读源代码，并学会使用&blockquote&&p&java.lang.Thread&br&java.lang.Runnable&br&java.util.concurrent.Callablejava.util.concurrent.locks.ReentrantLockjava.util.concurrent.locks.ReentrantReadWriteLockjava.util.concurrent.atomic.Atomic*java.util.concurrent.Semaphorejava.util.concurrent.CountDownLatchjava.util.concurrent.CyclicBarrierjava.util.concurrent.ConcurrentHashMapjava.util.concurrent.Executors&/p&&/blockquote&1.3.2. 学习使用线程池，自己设计线程池需要注意什么1.3.3. 锁&blockquote&&p&什么是锁，锁的种类有哪些，每种锁有什么特点，适用场景是什么 在并发编程中锁的意义是什么&/p&&/blockquote&1.3.4. synchronized的作用是什么，synchronized和lock1.3.5. sleep和wait1.3.6. wait和notify1.3.7. 写一个死锁的程序1.3.8. 什么是守护线程，守护线程和非守护线程的区别以及用法1.3.9. volatile关键字的理解&blockquote&&p&C++ volatile关键字和Java volatile关键字 happens-before语义 编译器指令重排和CPU指令重排&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Memory_ordering& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/M&/span&&span class=&invisible&&emory_ordering&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Volatile_variable& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/V&/span&&span class=&invisible&&olatile_variable&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A////the-happens-before-relation/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&//t&/span&&span class=&invisible&&he-happens-before-relation/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&1.3.10. 以下代码是不是线程安全？为什么？如果为count加上volatile修饰是否能够做到线程安全？你觉得该怎么做是线程安全的？&div class=&highlight&&&pre&&code class=&language-text&&public class Sample {
private static int count = 0;
public static void increment() {
&/code&&/pre&&/div&1.3.11. 解释一下下面两段代码的差别&div class=&highlight&&&pre&&code class=&language-text&&// 代码1
public class Sample {
private static int count = 0;
synchronized public static void increment() {
public class Sample {
private static AtomicInteger count = new AtomicInteger(0);
public static void increment() {
count.getAndIncrement();
&/code&&/pre&&/div&1.3.12. 参考资料&blockquote&&p&&a href=&///?target=http%3A///subject//& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/subject&/span&&span class=&invisible&&//&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A///content/www/us/en/processors/architectures-software-developer-manuals.html& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&/content/www/u&/span&&span class=&invisible&&s/en/processors/architectures-software-developer-manuals.html&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&二、 进阶篇2.1. Java底层知识2.1.1. 学习了解字节码、class文件格式&blockquote&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Java_class_file& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/J&/span&&span class=&invisible&&ava_class_file&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Java_bytecode& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/J&/span&&span class=&invisible&&ava_bytecode&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Java_bytecode_instruction_listings& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/J&/span&&span class=&invisible&&ava_bytecode_instruction_listings&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//www.csg.ci.i.u-tokyo.ac.jp/%7Echiba/javassist/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&csg.ci.i.u-tokyo.ac.jp/&/span&&span class=&invisible&&~chiba/javassist/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//asm.ow2.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&asm.ow2.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&2.1.2. 写一个程序要求实现javap的功能（手工完成，不借助ASM等工具）&p&如Java源代码：&/p&&div class=&highlight&&&pre&&code class=&language-text&&
public static void main(String[] args) {
int i = 0;
System.out.println(i);
&/code&&/pre&&/div&&p&编译后读取class文件输出以下代码：&/p&&div class=&highlight&&&pre&&code class=&language-text&&public static void main(java.lang.String[]);
Stack=2, Locals=2, Args_size=1
#2; //Field java/lang/System.out:Ljava/io/PrintS
invokevirtual
#3; //Method java/io/PrintStream.println:(I)V
LineNumberTable:
line 8: 16
&/code&&/pre&&/div&2.1.3. CPU缓存，L1，L2，L3和伪共享&blockquote&&p&&a href=&///?target=http%3A//duartes.org/gustavo/blog/post/intel-cpu-caches/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&duartes.org/gustavo/blo&/span&&span class=&invisible&&g/post/intel-cpu-caches/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//mechanical-/2011/07/false-sharing.html& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&mechanical-&/span&&span class=&invisible&&/2011/07/false-sharing.html&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&2.1.4. 什么是尾递归2.1.5. 熟悉位运算&blockquote&&p&用位运算实现加、减、乘、除、取余&/p&&/blockquote&2.1.6. 参考资料&blockquote&&p&&a href=&///?target=http%3A///subject/1138768/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/subject&/span&&span class=&invisible&&/1138768/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A///subject/6522893/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/subject&/span&&span class=&invisible&&/6522893/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Java_class_file& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/J&/span&&span class=&invisible&&ava_class_file&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Java_bytecode& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/J&/span&&span class=&invisible&&ava_bytecode&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Java_bytecode_instruction_listings& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/J&/span&&span class=&invisible&&ava_bytecode_instruction_listings&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&2.2. 设计模式2.2.1. 实现AOP&blockquote&&p&CGLIB和InvocationHandler的区别 &a href=&///?target=http%3A//cglib.sourceforge.net/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&cglib.sourceforge.net/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&动态代理模式 Javassist实现AOP &a href=&///?target=http%3A//www.csg.ci.i.u-tokyo.ac.jp/%7Echiba/javassist/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&csg.ci.i.u-tokyo.ac.jp/&/span&&span class=&invisible&&~chiba/javassist/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&ASM实现AOP &a href=&///?target=http%3A//asm.ow2.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&asm.ow2.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&2.2.2. 使用模板方法设计模式和策略设计模式实现IOC2.2.3. 不用synchronized和lock，实现线程安全的单例模式2.2.4. nio和reactor设计模式2.2.5. 参考资料&blockquote&&p&&a href=&///?target=http%3A//asm.ow2.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&asm.ow2.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//cglib.sourceforge.net/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&cglib.sourceforge.net/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//www.javassist.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&javassist.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&2.3. 网络编程知识2.3.1. Java RMI，Socket，HttpClient2.3.2. 用Java写一个简单的静态文件的HTTP服务器&blockquote&&p&实现客户端缓存功能，支持返回304 实现可并发下载一个文件 使用线程池处理客户端请求 使用nio处理客户端请求 支持简单的rewrite规则 上述功能在实现的时候需要满足“开闭原则”&/p&&/blockquote&2.3.3. 了解nginx和apache服务器的特性并搭建一个对应的服务器&blockquote&&p&&a href=&///?target=http%3A//nginx.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&nginx.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//httpd.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&httpd.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&2.3.4. 用Java实现FTP、SMTP协议2.3.5. 什么是CDN？如果实现？DNS起到什么作用？&blockquote&&p&搭建一个DNS服务器 搭建一个 Squid 或 Apache Traffic Server 服务器 &a href=&///?target=http%3A//www.squid-cache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&squid-cache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&br&&a href=&///?target=http%3A//trafficserver.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&trafficserver.apache.org&/span&&span class=&invisible&&/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&br&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Domain_Name_System& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/D&/span&&span class=&invisible&&omain_Name_System&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&2.3.6. 参考资料&blockquote&&p&&a href=&///?target=http%3A//www.ietf.org/rfc/rfc2616.txt& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&ietf.org/rfc/rfc2616.tx&/span&&span class=&invisible&&t&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//tools.ietf.org/rfc/rfc5321.txt& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&tools.ietf.org/rfc/rfc5&/span&&span class=&invisible&&321.txt&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Open/closed_principle& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/O&/span&&span class=&invisible&&pen/closed_principle&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&2.4. 框架知识&blockquote&&p&spring，spring mvc，阅读主要源码 ibatis，阅读主要源码 用spring和ibatis搭建java server&/p&&/blockquote&2.5. 应用服务器知识&blockquote&&p&熟悉使用jboss，&a href=&///?target=https%3A//www.jboss.org/overview/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&https://www.jboss.org/overview/ &i class=&icon-external&&&/i&&/a&&br&熟悉使用tomcat，&a href=&///?target=http%3A//tomcat.apache.org/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&http://tomcat.apache.org/ &i class=&icon-external&&&/i&&/a&&br&熟悉使用jetty，&a href=&///?target=http%3A//www.eclipse.org/jetty/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&eclipse.org/jetty/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&三、 高级篇3.1. 编译原理知识3.1.1. 用Java实现以下表达式解析并返回结果（语法和Oracle中的select sysdate-1 from dual类似）&div class=&highlight&&&pre&&code class=&language-text&& sysdate
sysdate - 1
sysdate - 1/24
sysdate - 1/(12*2)
&/code&&/pre&&/div&3.1.2. 实现对一个List通过DSL筛选&div class=&highlight&&&pre&&code class=&language-text&&
QList&Map&String, Object&& mapList = new QList&Map&String, Object&&;
mapList.add({&name&: &hatter test&});
mapList.add({&id&: -1,&name&: &hatter test&});
mapList.add({&id&: 0, &name&: &hatter test&});
mapList.add({&id&: 1, &name&: &test test&});
mapList.add({&id&: 2, &name&: &hatter test&});
mapList.add({&id&: 3, &name&: &test hatter&});
mapList.query(&id is not null and id & 0 and name like '%hatter%'&);
&/code&&/pre&&/div&&p&要求返回列表中匹配的对象，即最后两个对象；&/p&3.1.3. 用Java实现以下程序（语法和变量作用域处理都和JavaScript类似）：&p&代码：&/p&&div class=&highlight&&&pre&&code class=&language-text&&var a = 1;
var b = 2;
var c = function() {
var a = 3;
println(a);
println(b);
println(a);
println(b);
&/code&&/pre&&/div&&p&输出：&/p&&div class=&highlight&&&pre&&code class=&language-text&&3
&/code&&/pre&&/div&3.1.4. 参考资料&blockquote&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Abstract_syntax_tree& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/A&/span&&span class=&invisible&&bstract_syntax_tree&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&a href=&///?target=https%3A//javacc.java.net/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&javacc.java.net/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&a href=&///?target=http%3A//www.antlr.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&antlr.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&3.2. 操作系统知识&blockquote&&p&Ubuntu Centos 使用linux，熟悉shell脚本&/p&&/blockquote&3.3. 数据存储知识3.3.1. 关系型数据库&blockquote&&p&MySQL 如何看执行计划 如何搭建MySQL主备 binlog是什么 Derby，H2，PostgreSQL SQLite&/p&&/blockquote&3.3.2. NoSQL&blockquote&&p&Cache Redis Memcached Leveldb Bigtable HBase Cassandra Mongodb 图数据库 neo4j&/p&&/blockquote&3.3.3. 参考资料&blockquote&&p&&a href=&///?target=http%3A///en/ranking& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/en/ranki&/span&&span class=&invisible&&ng&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redis.io/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&redis.io/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A///p/leveldb/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&/p/level&/span&&span class=&invisible&&db/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//hbase.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&hbase.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//cassandra.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&cassandra.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//www.mongodb.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&mongodb.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//www.mongodb.org/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&http://www.neo4j.org/&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&3.4. 大数据知识3.4.1. Zookeeper，在linux上部署zk3.4.2. Solr，Lucene，ElasticSearch&blockquote&&p&在linux上部署solr，solrcloud，，新增、删除、查询索引&/p&&/blockquote&3.4.3. Storm，流式计算，了解Spark，S4&blockquote&&p&在linux上部署storm，用zookeeper做协调，运行storm hello world，local和remote模式运行调试storm topology。&/p&&/blockquote&3.4.4. Hadoop，离线计算&blockquote&&p&Hdfs：部署NameNode，SecondaryNameNode，DataNode，上传文件、打开文件、更改文件、删除文件&/p&&p&MapReduce：部署JobTracker，TaskTracker，编写mr job&/p&&p&Hive：部署hive，书写hive sql，得到结果&/p&&p&Presto：类hive，不过比hive快，非常值得学习&/p&&/blockquote&3.4.5. 分布式日志收集flume，kafka，logstash3.4.6. 数据挖掘，mahout3.4.7. 参考资料&blockquote&&p&&a href=&///?target=http%3A//zookeeper.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&zookeeper.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A//lucene.apache.org/solr/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&lucene.apache.org/solr/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A///nathanmarz/storm/wiki& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&/nathanmarz/s&/span&&span class=&invisible&&torm/wiki&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//hadoop.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&hadoop.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//prestodb.io/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&prestodb.io/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//flume.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&flume.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//logstash.net/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&logstash.net/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//kafka.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&kafka.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//mahout.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&mahout.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&3.5. 网络安全知识3.5.1. 什么是DES、AES3.5.2. 什么是RSA、DSA3.5.3. 什么是MD5，SHA13.5.4. 什么是SSL、TLS，为什么HTTPS相对比较安全3.5.5. 什么是中间人攻击、如果避免中间人攻击3.5.6. 什么是DOS、DDOS、CC攻击3.5.7. 什么是CSRF攻击3.5.8. 什么是CSS攻击3.5.9. 什么是SQL注入攻击3.5.10. 什么是Hash碰撞拒绝服务攻击3.5.11. 了解并学习下面几种增强安全的技术&blockquote&&p&&a href=&///?target=http%3A//www.openauthentication.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&openauthentication.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&HOTP &a href=&///?target=http%3A//www.ietf.org/rfc/rfc4226.txt& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&ietf.org/rfc/rfc4226.tx&/span&&span class=&invisible&&t&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&TOTP &a href=&///?target=http%3A//tools.ietf.org/rfc/rfc6238.txt& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&tools.ietf.org/rfc/rfc6&/span&&span class=&invisible&&238.txt&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&OCRA &a href=&///?target=http%3A//tools.ietf.org/rfc/rfc6287.txt& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&tools.ietf.org/rfc/rfc6&/span&&span class=&invisible&&287.txt&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Salt_%28cryptography%29& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/S&/span&&span class=&invisible&&alt_(cryptography)&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&3.5.12. 用openssl签一个证书部署到apache或nginx3.5.13. 参考资料&blockquote&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Cryptographic_hash_function& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/C&/span&&span class=&invisible&&ryptographic_hash_function&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Block_cipher& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/B&/span&&span class=&invisible&&lock_cipher&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Public-key_cryptography& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/P&/span&&span class=&invisible&&ublic-key_cryptography&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Transport_Layer_Security& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/T&/span&&span class=&invisible&&ransport_Layer_Security&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//www.openssl.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&openssl.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A///p/google-authenticator/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&/p/googl&/span&&span class=&invisible&&e-authenticator/&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&四、 扩展篇4.1. 相关知识4.1.1. 云计算，分布式，高可用，可扩展4.1.2. 虚拟化&blockquote&&p&&a href=&///?target=https%3A//linuxcontainers.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&linuxcontainers.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//www.linux-kvm.org/page/Main_Page& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&linux-kvm.org/page/Main&/span&&span class=&invisible&&_Page&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//www.xenproject.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&xenproject.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A//www.docker.io/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://www.&/span&&span class=&visible&&docker.io/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.1.3. 监控&blockquote&&p&&a href=&///?target=http%3A//www.nagios.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&nagios.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A///& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.1.4. 负载均衡&blockquote&&p&&a href=&///?target=http%3A//www.linuxvirtualserver.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&linuxvirtualserver.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.1.5. 学习使用git&blockquote&&p&&a href=&///?target=https%3A///& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=https%3A//git.oschina.net/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&git.oschina.net/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.1.6. 学习使用maven&blockquote&&p&&a href=&///?target=http%3A//maven.apache.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&maven.apache.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.1.7. 学习使用gradle&blockquote&&p&&a href=&///?target=http%3A//www.gradle.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&gradle.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.1.8. 学习一个小语种语言&blockquote&&p&Groovy Scala LISP, Common LISP, Schema, Clojure R Julia Lua Ruby&/p&&/blockquote&4.1.9. 尝试了解编码的本质&blockquote&&p&了解以下概念 ASCII, ISO-8859-1 GB2312, GBK, GB18030 Unicode, UTF-8 不使用 String.getBytes() 等其他工具类/函数完成下面功能&/p&&/blockquote&&div class=&highlight&&&pre&&code class=&language-text&&public static void main(String[] args) throws IOException {
String str = &Hello, 我们是中国人。&;
byte[] utf8Bytes = toUTF8Bytes(str);
FileOutputStream fos = new FileOutputStream(&f.txt&);
fos.write(utf8Bytes);
fos.close();
public static byte[] toUTF8Bytes(String str) {
&/code&&/pre&&/div&&blockquote&&p&想一下上面的程序能不能写一个转GBK的？ 写个程序自动判断一个文件是哪种编码&/p&&/blockquote&4.1.10. 尝试了解时间的本质&blockquote&&p&时区 & 冬令时、夏令时 &a href=&///?target=http%3A//en.wikipedia.org/wiki/Time_zone& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&http://en.wikipedia.org/wiki/Time_zone &i class=&icon-external&&&/i&&/a&&br&&a href=&///?target=ftp%3A//ftp.iana.org/tz/data/asia& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&ftp://ftp.iana.org/tz/data/asia &i class=&icon-external&&&/i&&/a&&br&&a href=&///?target=http%3A//zh.wikipedia.org/wiki/%25E4%25B8%25AD%25E5%259C%258B%25E6%E5%258D%2580& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&zh.wikipedia.org/wiki/%&/span&&span class=&invisible&&E4%B8%AD%E5%9C%8B%E6%99%82%E5%8D%80&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&闰年&br&&a href=&///?target=http%3A//en.wikipedia.org/wiki/Leap_year& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/L&/span&&span class=&invisible&&eap_year&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&闰秒 &a href=&///?target=ftp%3A//ftp.iana.org/tz/data/leapseconds& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&ftp://&/span&&span class=&visible&&ftp.iana.org/tz/data/le&/span&&span class=&invisible&&apseconds&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&System.currentTimeMillis() 返回的时间是什么&/p&&/blockquote&4.1.11. 参考资料&blockquote&&p&&a href=&///?target=http%3A///& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/UTF-8& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&en.wikipedia.org/wiki/U&/span&&span class=&invisible&&TF-8&/span&&span class=&ellipsis&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//en.wikipedia.org/wiki/UTF-8& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&http://www.iana.org/time-zones&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.2. 扩展学习4.2.1. JavaScript知识4.2.1.1. 什么是prototype&blockquote&&p&修改代码，使程序输出“1 3 5”： &a href=&///?target=http%3A//jsfiddle.net/Ts7Fk/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&jsfiddle.net/Ts7Fk/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.2.1.2. 什么是闭包&blockquote&&p&看一下这段代码，并解释一下为什么按Button1时没有alert出“This is button: 1”，如何修改：&a href=&///?target=http%3A//jsfiddle.net/FDPj3/1/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&jsfiddle.net/FDPj3/1/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.2.1.3. 了解并学习一个JS框架&blockquote&&p&jQuery ExtJS ArgularJS&/p&&/blockquote&4.2.1.4. 写一个Greasemonkey插件&div class=&highlight&&&pre&&code class=&language-text&&http://en.wikipedia.org/wiki/Greasemonkey
&/code&&/pre&&/div&4.2.1.5. 学习node.js&blockquote&&p&&a href=&///?target=http%3A//jsfiddle.net/FDPj3/1/& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&http://nodejs.org/&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.2.2. 学习html5&blockquote&&p&ArgularJS，&a href=&///?target=https%3A//docs.angularjs.org/api& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&https://&/span&&span class=&visible&&docs.angularjs.org/api&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&4.2.3. 参考资料&blockquote&&p&&a href=&///?target=http%3A//www.ecmascript.org/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://www.&/span&&span class=&visible&&ecmascript.org/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//jsfiddle.net/& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&jsfiddle.net/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A///& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A///& class=& external& target=&_blank& rel=&nofollow noreferrer&&&span class=&invisible&&http://&/span&&span class=&visible&&/&/span&&span class=&invisible&&&/span&&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A///& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&http://userscripts.org/&i class=&icon-external&&&/i&&/a&&/p&&/blockquote&五、 推荐书籍&blockquote&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253DZvRvWHu6SOnuDAZjWhpTWAqt5sjBXAKAeCkqdCFDLOxBWJVBnwmj7tnO073KpEUuesayvrQ7hvm50VDmyluWgoBcpW0hhVAnj0d7jq0J5nxS0CLDc%25252BkBd%25252FlYGH3A75GKYDUMsRn%25252FRLRYEUmnvjajAg%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《深入Java虚拟机》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253DruMSq37OOfbuDAZjWhpTWAqt5sjBXAKAeCkqdCFDLOxBWJVBnwmj7tnO073KpEUuesayvrQ7hvm50VDmyluWgoBcpW0hhVAnj0d7jq0J5nxS0CLDc%25252BkBd%25252FlYGH3A75GKYDUMsRn%25252FRLTIpZdTC6RHCA%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《深入理解Java虚拟机》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253DXNiOKJpiO7TuDAZjWhpTWDaAZ8A7vIffKo6rHv51kdtBWJVBnwmj7tnO073KpEUuesayvrQ7hvm50VDmyluWgoBcpW0hhVAnj0d7jq0J5nxS0CLDc%25252BkBd%25252FlYGH3A75GKYDUMsRn%25252FRLSqMCmgzjxR%25252BQ%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《Effective Java》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253DUTVfosmcpeW6k0Or%2BH4tHI7U6uhyhd5ENbBVuy6U6CLltG5xFicOdXrTUTgh9sMDPIwxrc30rg%25252Bti0P%25252FwKUmz9rLA8dYnymkYuN890a%2i6YdfNn1lRmtaud%252Bt5z%25252BDtPo5eXZSYdm6WZA2w%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《七周七语言》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253D8E0ZFkGCa4nuDAZjWhpTWIH%25252BZP%25252FBKjMYaRpVLarZ1rdBWJVBnwmj7tnO073KpEUuesayvrQ7hvm50VDmyluWgoBcpW0hhVAnj0d7jq0J5nxS0CLDc%25252BkBd%25252FlYGH3A75GKYDUMsRn%25252FRLTmCHcueORLqw%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《七周七数据》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253DX2wRRnOMgffuDAZjWhpTWCGSPR3bshuFJQ5oPTLBF1NBWJVBnwmj7tnO073KpEUuesayvrQ7hvm50VDmyluWgoBcpW0hhVAnj0d7jq0J5nxS0CLDc%25252BkBd%25252FlYGH3A75GKYDUMsRn%25252FRLSHNzbOReZhTA%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《Hadoop技术内幕》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253Dl9hhJRCCD9nebLdhAWchHLbUU0JZj4TW1BHSvcRrnkWLltG5xFicOdXrTUTgh9sMDPIwxrc30rg%25252Bti0P%25252FwKUmz9rLA8dYnymkYuN890a%2i6YdfNn1lRmtaud%252Bt5z%25252BDtPo5eUhCRMIlenyaA%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《Hbase In Action》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253DBqy%25252Fse2OntzghojqVNxKsfE0PFzNEA7q8HgNo8uZfyqLltG5xFicOdXrTUTgh9sMDPIwxrc30rg%25252Bti0P%25252FwKUmz9rLA8dYnymkYuN890a%2i6YdfNn1lRmtaud%252Bt5z%25252BDtPo5eXxMS9zg13LJg%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《Mahout In Action》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253Dw95piRGiFybuDAZjWhpTWGdkho7Gvmakc5n8OCikHcNBWJVBnwmj7tnO073KpEUuesayvrQ7hvm50VDmyluWgoBcpW0hhVAnj0d7jq0J5nxS0CLDc%25252BkBd%25252FlYGH3A75GKYDUMsRn%25252FRLTsOzyxQ6nLQA%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《这就是搜索引擎》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253DiuMmiSYV%25252BobghojqVNxKsZdy6yFShhOriLSVUC%25252FYQraLltG5xFicOdXrTUTgh9sMDPIwxrc30rg%25252Bti0P%25252FwKUmz9rLA8dYnymkYuN890a%2i6YdfNn1lRmtaud%252Bt5z%25252BDtPo5eV7QtacfFHhKQ%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《Solr In Action》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253DMkmsPHOlBQXuDAZjWhpTWEDeIpay%25252FCpUxDf4a6L3B5VBWJVBnwmj7tnO073KpEUuesayvrQ7hvm50VDmyluWgoBcpW0hhVAnj0d7jq0J5nxS0CLDc%25252BkBd%25252FlYGH3A75GKYDUMsRn%25252FRLStvh1VudKGNw%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《深入分析Java Web技术内幕》&i class=&icon-external&&&/i&&/a&&/p&&p&&a href=&///?target=http%3A//redirect./rd%3Fw%3Dunionnojs%26f%3Dhttp%253A%252F%%252Fauction%252Fedetail.htm%253Fe%253DQNSw6jWKnzLuDAZjWhpTWJFwhKp5ZMJT%25252FFY2y45CqT5BWJVBnwmj7tnO073KpEUuesayvrQ7hvm50VDmyluWgoBcpW0hhVAnj0d7jq0J5nxS0CLDc%25252BkBd%25252FlYGH3A75GKYDUMsRn%25252FRLQ7kLHNSG8FRg%2D%2526ptype%253D6from%253Dbasic%26k%3D5ccfdb%26c%3Dun%26b%3Dalimm_0%26p%3Dmm_63& class=& wrap external& target=&_blank& rel=&nofollow noreferrer&&《大型网站技术架构》&i class=&icon-external&&&/i&&/a&&/p&&p&&a 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一、基础篇1.1 JVM1.1.1. Java内存模型，Java内存管理，Java堆和栈，垃圾回收1.1.2. 了解JVM各种参数及调优1.1.3. 学习使用Java工具, , , jconsole, jinfo, jhat, javap, …
额~这个问题，我至少准备了半年。给题主点经验：&br&&br&首先，强烈建议采用“题海战术”。我当然不会告诉题主，今年面了数十家公司，90%的题目是原题（没办法，就那几个知识点，能有什么新题）&br&题库在哪里呢？按照循序渐进的原则，一一介绍：&br&1. cc150，全名cracking the coding interview - 150 Programming Questions and Solutions。经典中的经典，曾有人别的啥都不做，刷这本书三四遍，拿了Google的offer（注意是在美国，在中国就算了……）这本书的优势在于分章节，每章突出一块知识，题目精炼，答案好找；缺点呢，你写出的代码，需要深度检验，而cc150是书不是online judge，这个还是做不到。&br&2. leetcode。程序员刷面试题的第一网站，题多且全，少部分题目收费。刷的人很多，答案非常好找。online judge能深度检验代码的正确性，刷leetcode是最能锻炼算法题能力的。假如说时间有限只能刷一个，那必须是leetcode，假如时间够多……lintcode、meetqun等各大面试题OJ欢迎你，此外还有许多国内外大学的OJ。&br&----------------------------------------------------------------------------------------------------------------------------------------&br&以上是两大主力，但是光这两个，还不能到“题海”的水平，而且由于它们名气太响，有些公司有时会避开里面的题目……来，我们继续找题目。&br&3. 编程之美、剑指offer：就当成两本习题集好了，里面有些题目和1、2重复，但是大部分题目还是很优秀很巧妙的。&b&重点是交叉对比，你就知道哪些是经典题目了。&/b&&br&4. careercup、看准网等：每家公司都有自己喜欢出的题目，这些网站方便你去找面经，紧跟公司出题潮流。&br&5. “结构之法”博客：July大神的博客，内容丰富，学习一年都可以。这里只讲里面的算法题：“微软面试100题”（实际上已经快500题了）系列，堪称算法题的大宝库，包罗万象，而且很多题目很新，是面试官喜欢出的类型……不过这个系列的排版略微混乱，很多题也没有答案；“程序员编程艺术”系列，讲的很细致，适合深入去学习一些算法；“教你如何迅速秒杀掉：99%的海量数据处理面试题”，很实用的海量数据处理面试文章。&br&6. 经典库函数。这块单独拉出来，是因为考的很多，比如atoi，strstr，memcpy等等……在“程序员编程艺术”中，杂七杂八有相关的论述，最好自己系统整理一下。&br&------------------------------------------------------------------------------------------------------------------------------------------&br&&br&好，这些足够我们的题海了。下面来讲一下，哪些属于题海中的重点。&br&1. 最高优先级：面经。这个比什么都重要，为了节约招聘成本，同一家公