find the average of numbers using array

JSP网上书籍销售系统，内有DFD图，数据字典，数据库表格等(JSP books online sales system, which has DFD diagram, data dictionary, database forms, etc.)

高校教材管理系统，功能就是学生老师选教材，缴费，推荐教材，管理员管理教材生成订单，用mysql+jsp+java(Teaching Material Management System, features its own definition of what is, not too reasonable, but has the opposite function, can be used as a template to be modified, with mysql+jsp+java)

运用ArrayList来实现数据的出栈、入栈功能 查看栈当前长度-Mystack

铁蹄，外国五子棋。初学者必看

java电子书管理系统，对电子书的增删改查，初学者适应(Java student information management system, mainly include: add and delete student information, for information management. Suitable for beginners.)

Practical Java Web Semantic

说明：  数控系统 NC 程序 快速查看修改及模拟检查。(NC program of CNC system can be checked, modified and simulated quickly.)

说明：  date Time control template

一个java的Maven项目适合初学者前端基于layui框架，后端是ssm框架

给予javaweb的校友访问系统，有完善的数据库和前后台，可供学习使用