java串口连接pos机输入输出

JDK示例改进版，请多多指教-improved version JDK example, the exhibitions

java新io的教程~~比较有用,呵呵~~~最好学学 -new io ~ ~ Guide to the more useful, huh ~ ~ ~ learn best

j2ee 编写的购物车系统，有简单的购物，可登录，选择图书，购买，购物车，下定单等功能~~~(Shopping cart system, a simple shopping, you can log in, choose books, buy, shopping cart, place an order, etc. ~ ~ ~)

java 编程思想,很不错的源程序例子,请大家仔细看看.-java programming ideas, a very good source examples, please look carefully.

一个简单的公司人力管理系统 里面包含了答辩PPT 项目文件 (A simple corporate human resource management system which contains respondent PPT project file)

收集一些Java 图形用户界面编程实验源码集锦：1.窗口和事件处理。2.容器与布局管理（流式布局FlowLayout）。3.容器与布局管理（边缘布局BorderLayout）。4.容器与布局管理（网格布局GridLayout）。5.容器与布局管理（卡片式布局CardLayout）。 　　6.容器与布局管理（网格块布局GridBagLayout）。7.标准GUI组件（文本框与文本域）。 　　8.标准GUI组件（复选按钮）。9.标准GUI组件（单选按钮）。10.标准GUI组件（下拉列表）。 　　11.标准GUI组件（列表）。12.标准GUI组件（滚动条）。13.鼠标事件。14.键盘事件。 　　15.菜单（下拉菜单）。16.菜单（多级菜单）。17.菜单（弹出式菜单）。18.对话框。 　　相信这些Jaa实验代码对学习Java编程有帮助。

BLE开发所需要的知识，通过官方demo，我们会发现很多service，点击service后，每个service下面是Characteristic，每个service和Characteristic都对应一个唯一的UUID。所以，在做BLE时候，首先你应该找出你的蓝牙外围设备uuid，不然会很头疼，这个UUID也可能是硬件给你的，也可以你自己试出来，当然自己试出来是个很烦的过程。自己试的方法就是根据demo，加上一份读写的协议，然后，排着点击，显示出来的蓝牙列表进行测试，看是否和协议对应。另外，BluetoothLeService类不用做太多的更改。(BLE develops the knowledge we need. Through official demo, we will find many service. After clicking service, every service is Characteristic, each service and Characteristic correspond to a unique UUID. So, when making BLE, first you should find out your Bluetooth peripheral device UUID, otherwise it will be very headache. This UUID may also be hardware for you, or you can try it out yourself, of course, trying out it yourself is a very boring process. The way to do it is to add a read and write protocol based on demo,then test the Bluetooth list displayed by clicking on it to see if it corresponds to the protocol. In addition, the BluetoothLeService class does not have to make too many changes.)

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网上酒店管理系统，主要面向酒店开发和使用。系统使用JSP+Servlet+JDBC技术开发。系统角色分为经理（管理员）和员工（普通用户）两种用户。其中经理（管理员）具有查看所有预定、删除客房、查看员工、添加员工等功能权限，员工（普通用户）具有查看空房、客户预订、修改预订、删除预订、注册新客户等功能权限。(Online hotel management system, mainly for hotel development and use. The system uses JSP+ Servlet+ JDBC technology development. System Role divided Manager (Administrator) and staff (ordinary users) two user. Where managers (administrators) have all scheduled to delete rooms, view staff, adding features such authority staff, employees (the average user) has to check availability, customer reservations, modify reservations, delete reservations, registration of new customers and other functions permission.)

公司自己开发的工作流引擎，值得参考，大家有时间可以-The company developed its own workflow engine, it is also useful, everyone has time to