learn_Android_21_day

次程序具有基于单片机的控制步进电机转动功能(Sub-program has a microcontroller-based control of stepper motor rotation function)

力扣网面试题答案，源码，供大家参考参考，祝大家面试顺利(The answer to the interview questions on the Internet, source code, for your reference, I wish you a smooth interview.)

java语言规范se11版，官方版文件针对java11(Java language specification se11)

说明：  主要对Java的23种设计模式进行详细的讲解，内容风趣幽默，举例让人印象深刻(It mainly explains 23 design patterns of Java in detail, with humorous contents and impressive examples)

深入java虚拟机,rar,很优秀的一本书,翻译的有点差()

Java编程思想第4版，这本书就不用介绍了吧，学Java的人都知道。(Bruce.Eckel.Thinking.In.Java.4th.Edition.)

uml建模经典书，通俗易懂的话语让你轻松学习建模语言(uml modeling classic book, easy to understand words so that you easily learn modeling language)

Spring in Action, Fourth Edition is for all Java developers, but enterprise Java developers will find it particularly useful.

e-book J2EE book thanks

Manning - Lucene in Action Lucene is a gem in the open-source world--a highly scalable, fast search engine. It delivers performance and is disarmingly easy to use. Lucene in Action is the authoritative guide to Lucene. It describes how to index your data, including types you definitely need to know such as MS Word, PDF, HTML, and XML. It introduces you to searching, sorting, filtering, and highlighting search results. Adding search to your application can be easy. With many reusable examples and good advice on best practices, Lucene in Action shows you how. And if you would like to search through Lucene in Action over the Web, you can do so using Lucene itself as the search engine--take a look at the authors awesome Search Inside solution. Its results page resembles Google s and provides a novel yet familiar interface to the entire book and book blog.(Manning- Lucene in Action Lucene is a gem in the open-source world--a highly scalable, fast search engine. It delivers performance and is disarmingly easy to use. Lucene in Action is the authoritative guide to Lucene. It describes how to index your data, including types you definitely need to know such as MS Word, PDF, HTML, and XML. It introduces you to searching, sorting, filtering, and highlighting search results. Adding search to your application can be easy. With many reusable examples and good advice on best practices, Lucene in Action shows you how. And if you would like to search through Lucene in Action over the Web, you can do so using Lucene itself as the search engine--take a look at the authors awesome Search Inside solution. Its results page resembles Google s and provides a novel yet familiar interface to the entire book and book blog.)