文件格式转换

多媒体类别，包含Huffman编码、lzw编码和算数编码三种，对“I have a dream”进行编码(Including Huffman Coding、lzw coding and Arithmetic coding)

一个使用struts+hibernate制作的Blog站点的源码,非常经典(A use struts+ hibernate make Blog site source code, very classic)

Contains the generics, enumerations, static imports, automatically split open a case, using the foreach, variable parameter, such as reflection

info-box extractor for Wikipedia

编写应用程序，当鼠标进入窗口时，用一个文本框给出鼠标进入或离开的信息，当鼠标左键按下拖拽时，文本框给出鼠标所在点的坐标(Written application, when the mouse enters the window, a text box with the mouse enters or leaves given the information, press the left mouse button when dragging, the text box where the point given the coordinates of the mouse)

web 系统开发实例，采用Struts+Hibernate框架编写，初学者学习.(Web system development example, use Struts+ Hibernate framework to write, beginners to learn.)

说明：  一只青蛙一次可以跳上1级台阶，也可以跳上2级。求该青蛙跳上一个n级的台阶总共有多少种跳法。要求：分别用普通方法和递归方法实现(A frog can jump up a step or two at a time. Find out how many jumping methods the frog can use to jump up an n-step. Requirements: Implemented by common method and recursive method respectively)

Implementation of Tetris in java - source code attached

一个基于java的串口通信，比较简单的程序，在eclipse里开发，需要先把串口通讯相关的dll文件安装好(A java-based serial communication, relatively simple procedures, the eclipse in the development, the need first serial communication related dll files installed)

正则表达式的一个小例子，利用正则表达式判断文件中的字符是什么类型的。(Regular expression in a small example of the use of regular expressions in the document to determine what type of character.)