DBtools

说明：  使用java，实现的简单的实现学生选课系统，附有源码和运行截图以及数据库(Using java, the simple implementation of student course selection system, with source code and running screenshots and database)

这是一个用java实现的icq软件。 功能与icq基本类似，具有即时通信软件必须的功能。 通过学习本源码可以了解即时通信软件的核心代码并且了解其功能的实现方法，和如何运用(This is a realization of java with the password software. Function and password essentially similar, with instant communication software must function. Through the study of the source can immediately understand the core communication software code to understand its function and the realization of methods, and how)

说明：  天天酷跑代码 包含源代码 图片资源 代码内有注释(Everyday cool run code)

说明：  好用的web打印插件,适用于小型项目开发，简单方便(Useful web print plug-in, suitable for small-scale project development, simple and convenient)

2019北航面向对象课设12个项目的代码(BUAA 2019 Object Oriented CODE)

Java编程基础，关于api中String类中的方法实现，适合Java学习着使用(Java programming foundation, about the method implementation in String class in api, suitable for Java learning to use)

j2se应用编程150例，经典源代码，收藏多年(j2se application programming 150 cases)

jsp 实现的火车售票系统 课程作业 需要的可以下载看看(jsp realization train ticketing system)

apk sample. kingdom rush

基于JAVA的B+树数据结构，B+树是改进的平衡二叉树，查询效率更高。(JAVA-based B+-tree data structure, B+ tree is an improved balanced binary tree, the query more efficient.)