jfreechart_src

电费管理系统比较社和初学者！对实际应用，帮助比较大！(Electricity management system is relatively clubs and beginners! For practical applications, to help big!)

说明：  各种指标统计趋势加仓，风控合理，适合小资金，多品种对冲暴力ea(It is suitable for small capital and multi variety hedging violence EA)

利用开源的源码为一个朋友的V3手机手机写的科学计算器，个人觉得很好用。开发平台为Netbeans + Moto的SDK，可以用这个源码为任何一个支持java的手机写个类似的计算器(The use of open source code for a friend)

机器学习中Perceptron算法统计词频(The statistics of words of perceptron algorithm in Machine Learning)

说明：  蓝牙通讯协议demo，已经通过通讯测试，实测可以正常进行蓝牙协议通讯(Bluetooth Communication Protocol Demo)

java实现超市货品管理系统，设计数据库，JDBC,JSP等技术(Java to achieve supermarket goods management system, design , JDBC, JSP and other technologies)

ClassFileAssembler.Class File Assembler Source Code for Andriod.

实现加减乘除，平方，取余，三角函数等计算功能(Achieve addition, subtraction, multiplication and division, square, redundancy, trigonometric functions and other computational functions.)

1、任务管理中，添加任务时去掉了分类和日期的必须输入检查，更方便快速添加； 相应的数据库脚本中，任务表(todo)的任务分类ID(CATEGORY_ID)和处理时间(DEAL_DATE)字段修改为允许空值； 2、任务管理中，修改了当点击新添加行的优先级和状态时也相应事件的Bug； 3、添加了相册名称和文档名称的最大长度验证； 4、笔记模块，修改直接添加笔记时，无法从相册添加图片的Bug； 5、用户管理模块更名为系统管理，并添加了系统设置功能，可以直接在页面上设置如下信息： 邮箱服务器、邮箱账号、邮箱密码、是否开放注册、相册缩略图尺寸； 升级时注意数据库脚本的修改。 (1, task management, add tasks remove classification and date when the must input inspection, more convenient fast add The corresponding database scripts, task lists (todo) task CATEGORY_ID) and the ID (classification processing time (DEAL_DATE) field modification to allow null values 2, task management in a click new add, modify did when priority and status of the corresponding events Bug 3, added album name and document name maximum length of validation 4, notes module, modify, cannot directly add notes from the album the Bug add images 5, user management module was renamed system management, and add system functions, can be directly on the page set the following information: Mailbox server, email accounts, E-mail passwords, is open registration, photo album thumbnail size Upgraded the modification. Attention database script )

实现类似Windows操作系统“计算器”的功能。可以完成任意的通常借助手持计算器来完成的标准运算。“计算器”可用于基本的算术运算，比如加减运算等。同时它还具有科学计算器的功能，比如对数运算和阶乘运算等。(Windows operating system to achieve a similar " calculator" function. You can complete the usual arbitrary use handheld calculators to complete the standard operation. " Calculator" can be used for basic arithmetic operations, such as addition and subtraction operations. It also has a scientific calculator functions, such as arithmetic and logarithmic factorial computing.)