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一个树结构的展示，自己用的整理好的。有java原代码，也有js的原代码(A tree structure display, finishing with their best. Have java source code, but also has the original js code)

check the url link whether it is good or bad link

说明：  可以自己选择图形是否填充及颜色的画图工具(Drawing tools that can choose the colors and shapes.)

说明：  用java做的按键精灵，在windows下有全局热键。jar包里面有完整源代码(Wizard button to do with java,can use global hotkeys under the windows. The jar package include full source code.)

Hades (HAmburg DEsign System) is a pure-Java framework for interactive simulation, especially for digital system simulation. It includes a graphical schematics editor, several simulation engines, and a library of simulation models.

ant1.7 , built utils

说明：  源码和依赖的jar包都在压缩文件里 test目录下有行情的demo，交易部分的API还没完全做好，可以连上前置和登录 这个java接口算是预览版吧(Source code and dependent jar packages are all demo in the test directory of the compressed file. The API of the transaction part is not yet complete. You can connect the pre-and login java interface as a preview version.)

这是一个简单的字典程序，可供java初学者参考学习(this is simple java program about dictionary)

JPEG Algorithm using java

说明：  基于JavaGUI的数学题练习平台，题目分为小学，初中，高中，每次测验后，会生成当前的测试成绩(JavaGUI-based Mathematics Exercise Platform, the topics are divided into primary, junior and senior high schools, after each test, the current test results will be generated.)