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birch算法是聚类算法的一种，克服了k-means算法的缺点，这里提供了详细的讲解ppt和代码(The birch algorithm is a kind of clustering algorithm, which overcomes the shortcomings of the k-means algorithm. Here is a detailed explanation of ppt and code.)

APP Store 简单的应用了SSH架构和JSP的系列开发(APP Store )

简单输出一段文字的程序，能够帮助初学者顺利深入学习(Text output section of a simple procedure that can help beginners learn the smooth depth)

　　　采用JAVA作为开发工具，mysql作为后台数据库。本系统具有学生基本信息管理、学生成绩信息管理、教师基本信息管理等功能。分成三大模块，每个模块都相互联系，但不相互干扰，这符合了软件模块开发的思想。 本系统完成了学生信息的查询、修改、增加、删除；教师信息的查询、修改、增加、删除以及学生成绩信息的查询、修改、增加、删除等功能。(Using JAVA as a development tool, mysql database as a background. This system has the students basic information management, information management student achievement, teachers basic information management and other functions. Divided into three modules, each linked to every other, but do not interfere with each other, in line with the idea of ​ ​ a software module development. The system completed the student information query, modify, add, delete teacher information query, modify, add, delete, and student achievement information, query, modify, add, delete functions.)

说明：  初学java的可以借鉴，学java的可以借鉴学java的可以借鉴(Lessons for beginners of Java)

Introduction to Computing and Programming with Java

该程序是用java编写的一个用rmi远程调用的分布式会议系统，纯属原创，供大家参考和学习(The program is written in a java rmi remote call with a distributed conferencing systems, purely original, for your reference and learning)

说明：  LL(1)文法和预测分析方法 1.文法使用产生式来定义； 2.分别求出文法中每一个非终结符的FIRST集、FOLLOW集和SELECT集； 3.画出预测分析表； 4.判定给定的文法是否是LL(1)文法； 5.给定符号串判定是否是文法中的句子，分析过程用分析表格的方式打印出来。(LL(1) Grammar and Predictive Analysis 1. Grammar is defined by production. 2. Find out the FIRST set, FOLLOW set and SELECT set of each non-terminator in grammar. 3. Draw a forecast analysis table. 4. Determine whether a given grammar is LL(1) grammar; 5. Given a string of symbols to determine whether it is a sentence in grammar, the analysis process is printed out in the form of an analysis table.)

实现ftp代理服务器的基本功能，包括文件的上传下载 用户的登录等(Ftp realize the basic functions of a proxy server, including file uploading and downloading the user)

C4.5决策树算法java实现,未实现截枝部分(decision tree algorithm)