Exam

设计一个成绩录入程序，通过键盘录入examId（考号，要求全部是数字符号）、name（姓名，要求全部是字母符号）和score（成绩，要求介于0~800）。当输入数据的类型、输入数据的范围出现错误时，使用Java语言定义的异常类和自定义异常类进行处理。(Entry procedures for the design of a performance by keyboard entry examId (candidate number, the number of requests are all symbols), name (name, requirement for a letter symbols) and score (results, request the range of 0 ~ 800). When the type of input data, the scope of input data errors, use the Java language as defined custom exception classes and exception classes for processing.)

用struts写的一个简易的后台，直接解压后导入eclipse即可运行，是很好的学习资料(Using struts to write a simple background, directly decompress and import eclipse to run, is a good learning material.)

说明：  使用A星（a-star）算发，通过上传二维矩阵中不能通过的坐标点，来为起止坐标点计算一条最短可通过路径(Using A-star, a shortest path is calculated by uploading the coordinate points that can not be passed in the two-dimensional matrix.)

Hbase是实时、多维数据库，是Hadoop的子项目，技术领先，上传的是Hbase example(Hbase example)

This interface provides a method to filter data entries.

本文将用一系列易懂的语言和例子解释Java的网络Socket支持。(This article will use a series of easy-to-understand language and examples to explain the network Socket support Java.)

java深入浅出设计模式的 一个总结 (Head First Design Patterns of Summary)

mp3播放器，很好很强大的播放器java源代码，注释什么都有，简单易懂，(mp3 player, a very powerful player java source code, comments, everything, easy to understand,)

说明：  hdw-dubbo微服务化开发平台，具有统一授权、认证后台管理系统，其中包含具备用户管理、资源权限管理等多个模块，支持多业务系统并行开发，可以作为后端服务的开发脚手架。代码简洁，架构清晰，适合学习和直接项目中使用。 核心技术采用SpringBoot、Du(Hdw Dubbo microservice development platform has a unified authorization and authentication background management system, which includes user management, resource rights management and other modules. It supports the parallel development of multiple business systems and can be used as the development scaffolding of back-end services. The code is concise and the architecture is clear, which is suitable for learning and direct project. The core technology is spring boot and Du)

强大的搜索引擎，目前最流行的全文搜索引擎，分享给大家一起学习，共同进步。(The powerful search engine, the most popular full text search engine, is sharing for everyone to learn together and make progress together.)