自动升级

Formats tracker data as KML output.

《struts应用开发完全手册》中的源代码及安装指导-" Struts application development entirely manual," the source code and installation guide

java代码实现merkle根，完全二叉树形式求解

铁蹄，外国五子棋。初学者必看

可以和任何语言搭配使用，用了都说好 java php c#等-Can be used in any language, that spent a good java php c#, etc.

USB--UART转接的作用，CH34X是指具体一系列型号的芯片，包括CH340和CH341,Usb转串口程序 , ch340 usbtouart

基于servlet的一个下载进度条，想研究进度条的可以看看，仅供初学者学习交流使用，谢谢。(Servlet based on a download progress bar, and wanted to study the progress bar can look, for beginners to learn to share, thank you.)

说明：  基于android手机的蓝牙串口调试助手（源码）(Bluetooth Serial Port Debugging Assistant (Source Code) Based on Android Mobile Phone)

简单计算器，加减乘除。java程序，可视化。(Simple calculator, subtraction, multiplication and division. java program visualization.)

Downloader Activity extends Activity.