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1. 分别使用Vector、Hashtable、Stack，ArrayList、LinkedList和HashSet作为容器类，实现以下要求： (1) 向容器中添加1,000,000个随机整数。 (2) 遍历容器中的所有元素。 (3) 随机产生100,000个整数，在容器中查找这些整数。 (4) 随机产生100个整数，从容器中删除这些整数。 (5) 统计完成以上各个操作需要的时间。 比较一下不同操作在不同数据结构下的性能差异。程序文件命名为Exe5_1.java。 (51 respectively using Vector, Hashtable, Stack, ArrayList, LinkedList and HashSet as the container class, to achieve the following requirements: ( 1) are added to the container 1000000 random integers. ( 2) to traverse all the elements in the container. ( 3) 100000 randomly generated integer, in the container to find these integers. ( 4) random produces 100 integers, is removed from the container of these integers. ( 5) complete the statistics above each operation requires time. Compare the different operating at different data structure performance differences. Program file named Exe5_1.java )

北大青鸟第三单元项目 北大青鸟办公系统 ssh(Beida Jade Bird third unit Beida Jade Bird project office systems)

This code is Leap motion control sample. This code is a web app with java script.

java mainshi baoduan gaojipian

项目描述 超市订单管理系统运行环境 jdk8(jdk7) mysql Eclipse maven tomcat7项目技术(必填) springboot spring mvc mybatis jquery jsp数据库文件 链接: https://pan.baidu.com/s/1MlZoNn8MOyagJUdVk3ih1A 密码: 6mi1jar包文件 maven搭建  登录帐号admin 1234567   http://localhost:8080/login.jsp

主要用于支持spatial indexing technology, 使用spatial index包括R-tree以及R-tree的扩展，可以进行包含坐标数据的index以及search(Used to support spatial indexing technology, including the use of spatial index R-tree and R-tree extension can contain coordinate data of the index and search)

说明：  Esbox 的部分源代码,可提供学习使用。。。。。。。。。。。。(Esbox source code.......................)

用java写的miniCAD软件,可绘画，改变位置改变颜色等(miniCAD written by Java)

这是一个功能完善的苗木管理系统，具体分为5个模块，各个模块之间又有着数据之间的联系，通过数据库来存储数据，(This is a fully functional nursery management system, specifically divided into five modules, and each module has a link between between the data through a database to store data,)

用于检测手机麦克风输入音量大小的DEMO(it s used to detect the volume of phones micphone)