截屏源码，无需root权限，但需要apk升级为系统级应用

这是一个图书管理系统，里面实现了图书后台的管理，使用java语言开发，有最基本的借书还书的功能。能够满足最基本的需求，有添加图书种类，续借等功能，大家可以下载参考一下，源码完整，使用sql数据库。

说明：  windows这是一个随便选的文档，因为我想下一个东西，但是开会员太贵了(windows This is an optional document, because I want the next thing, but the meeting members are too expensive.)

说明：  An Android File Manager source code that supports decompression can also be used for routine operations such as copying, moving, deleting and renaming. When compressing files, they can only be compressed into ZIP format, not rar format. Decompression also supports ZIP format tightly. Source code has more detailed annotations.

利用java，和数据库，实现语音聊天，适合安卓的开发，源码开源，其中可能会用不少错误，发表上来大家参考，多多提意见，

Solve a equation in two variables.

一个学习SQLite的很好的例子，利用SQLiteOpenHelper抽象类创建数据库，然后对数据库进行增删改查，以完成个人日记本的各种功能。(A very good example to learn SQLite SQLiteOpenHelper abstract class to create a database, then the database CRUD personal diary to complete a variety of functions.)

最近做了一个JAVA FTP协议 APACHE包内，上传，下载，查看，删除文件和目录的东西，拿出来给不明白的同学分享一下，希望得到帮助。搭建好服务器后，运行代码实现相应功能。

Delaunay三角网的逐点插入法. 原始作者 @author Paul Chew * * Created July 2005. Derived from an earlier, messier version.(Delaunay triangulation point by point insertion method. Original author @ author Paul Chew** Created July 2005. Derived from an earlier, messier version.)

Returns whether this {@code Enumeration} has more elements.

UDP服务器和客户端通信的简单例子，但麻雀虽小，五脏俱全，适合于初学者。-UDP server and client communication simple examples, but Sparrow small, perfectly formed, and suitable for beginners.