Tag-Concept-Hierachy

基于安卓系统的数据库使用源代码教程，编译验证可行(Android-based tutorial database using the source code, compile proven feasible)

绘制1个沿圆形轨道运动的红色球体和1个沿椭圆轨道运动的蓝色球体。两个轨道圆心重合，圆的半径为100，椭圆的长短轴半径分别为200和100，运动方向为顺时针(Draw a circular orbital motion along the red sphere and a movement along the elliptical orbit of the blue sphere. Center two tracks overlap, the circle Radius of 100, the radius of the ellipse minor axis of 200 and 100, respectively, for the clockwise direction of motion)

简单java聊天程序，尚学堂科技_马士兵_在线聊天系统雏形视频教程(Plain java chat program, School Technology _ Refbacks _ online chat system prototype video tutorial)

增删改查功能实现有数据库sql，提供给大家学习(Add, delete, modify and check functions to achieve database sql, for everyone to learn)

这是一个在java中显示笑脸，哭脸等不同表情的程序，总共可现实三种表情!(this is a programe that can show different face expressionn!)

Application using Entreprise java bean (EJB)

Access midi and sf2 through java

说明：  Guava 20.0 正式发布，Google 的 Java 常用类库。 guava-20.0.zip(Guava 20 is officially released, Google's Java common class library. guava-20.0.zip)

Java Database Best Practices

Java Reference book for OCJP(prev SCJP)