MyCalculator

使用java实现R树，包括插入，删除，查找等功能(Using java to achieve R-tree, including insert, delete, search and other functions)

An immutable hash-based multiset. Does not permit null elements.

编写一个Ellipsoid类，用于椭球体的表示，其中定义三个私有变量表示一个椭球体的长半轴a短半轴b和扁率apha(Write a Ellipsoid class, used to represent the ellipsoid, which defined three private variables represents an ellipsoid semimajor axis semiminor axis B and a of APHA)

说明：  swting 实现 PLC socket交互传输数据(Swting realizes interactive data transmission of PLC socket)

说明：  這是一個用JAVA所寫的簡單繪圖應用程式 JPanel為容器物件.pane1為畫布.pane2物件用來放置繪圖工具按鈕.pane3放置顏色按鈕(This is a book with a simple JAVA application mapping for the JPanel container object. Pane1 for the canvas. Pane2 object mapping tool used to place the button. Pane3 placed color button)

使用shiro框架进行权限设置，该框架提供权限、安全、过滤等功能(Use Shiro framework to set permissions, which provides permissions, security, filtering and other functions)

说明：  java 实现的签名方案，支持多种签名方案(java program to achieve the signatures in support of a variety of signature scheme)

说明：  基于J2EE的公交查询系统Bus query system based on J2EE,(Bus query system based on J2EE,)

云计算开源平台cloudstack的相关技术资料和参考文献(Open source cloud computing platform cloudstack the relevant technical information and references)

unicode转换工具，可把原码转化为html unicode，java unicode以及unicode码(unicode conversion tool, you can put the original code into the html unicode, java unicode and unicode code)