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这是一个介绍jna的pdf，对初学者可能会有帮助(This is a description jna the pdf, may be helpful for beginners)

javaocr程序，实现基于java的验证码识别工具 验证码识别(javaocr identification code validation)

国密算法的实现与一些测试类，直接使用jar包就可以,转载自csdn(SM2 SM4 SM3 description)

说明：  全书分四个部分：基础知识、函数式数据处理、高效Java 8 编程和超越Java 8。(The book is divided into four parts: basic knowledge, functional data processing, efficient Java 8 programming and beyond Java 8.)

通过这个程序，充分理解理解抽象类与接口的概念。(Through this program, understand fully understand the concept of abstract classes and interfaces.)

Tests regular expressions containing.

一个基于java线程的程序，截取ARP包。可以截取和发现ARP欺骗。(A java-based threading procedure, the interception of ARP packets. ARP can be found in the interception and deception.)

能够实现简单类型的插入排序、冒泡排序和快速排序的升序和降序排列。(To achieve a simple type of insertion sort, bubble sort and quick sort of ascending and descending order.)

机会网络模拟器one的程序代码以及相关介绍说明文档，可视化环境(One：opportunity network simulator program code and documentation related presentations, visual environment)

The following words are used as keywords in proposed extensions and are therefore reserved to allow for the possibility of future adoption of those extensions.