CoreJava

第二部分，平时练习后保存的小程序，方便大家参考学习，适合初学者练习练习，增加代码量！(The second part, after the usual practice to save a small program to facilitate your learning, suitable for beginners to practice exercises to increase the amount of code!)

Easy to use, text base calculator with complex numbers.

说明：   字符串数组中的某个字符进行替换 统计每个数字出现的个数(A string array of characters in the replacement of Statistics figures for each number of)

说明：  个人博客，Spring Boot 开山之作，采用 Spring Boot + MyBatis，前端 Bootstrap + LayUI，支持程序员非常青睐的轻量化的 Markdown 编辑器 Editor.md，支持标签分类(Personal blog, spring boot's pioneering work, uses spring boot + mybatis, front-end bootstrap + layui, and supports the lightweight markdown editor favored by programmers Editor.md , support label classification)

SOA最佳实践能提供给你对soa的重新认识()

该项目采用Struts框架，主要为各类通信系统运营商或信息系统用户提供业务管理的完整解决方案。整个任务管理系统分为系统管理员、主管和员工三种角色，其中系统管理员具有添加人员、删除人员和分配人员的职责，主管具有制定任务、查看任务、调整任务、跟踪任务和查看人员等职责，员工具有制定计划、反馈计划、删除计划和查询计划的职责。通过以上三个角色实现对任务的管理。(The project uses the Struts framework, mainly to provide a complete solution for all types of business management communications system operator or user information systems. Overall task management system is divided into system administrators, supervisors, and employees in three roles, responsibilities which the system administrator has to add staff, delete personnel and distribution personnel in charge with the development tasks, view task, adjusting tasks, tracking tasks and view personnel duties, employees have a plan, feedback programs, plans and responsibilities delete query plans. Management of tasks to achieve the above three roles.)

数字证书注册和签发系统，利用JCA和JCE实现数字证书的注册，并提供一个密钥库管理以及私钥的存储和导出以及传输得安全机制(Digital certificate registration and issuance system, the use of JCA and JCE realize digital certificate registration, and provide a key database management, and private key storage and export, as well as a security mechanism for transmission)

Java 面试宝典，讲解面试技巧，面试常见问题。(Java Interview Collection)

数据库连接及简单操作(database)

根据ArcSoft的工具包设计的简单人脸识别DEMO，仅供学习。APPID等需要到ArcSoft注册一个应用获得 开发环境准备：###开发使用到的软件和工具：Jdk8、mysql5.7、libarcsoft_face.dll(so)、libarcsoft_face_engine.dll(so)、libarcsoft_face_engine_jni.dll(so)、idea注：libarcsoft_face.dll(so)、libarcsoft_face_engine.dll(so)、libarcsoft_face_engine_jni.dll(so)、app-id、sdk-key可以到虹软官网 http://ai.arcsoft.com.cn/ 免费申请下载本地配置：配置环境(推荐jdk8，mysql5.7，maven3，idea)引擎库libarcsoft_face、libarcsoft_face_engine、libarcsoft_face_engine_jni。把dll或so文件拷贝到java.library.path所包含的路径下,注意区分X86和X64，和当前jdk版本一致。初始化项目 创建数据库arcsoft_face_demo，执行脚本arcsoft_face_demo.sql使用idea启动项目修改配置文件srcmainesourcesapplication.properties填写数据库地址：spring.datasource.druid.url填写数据库用户名：spring.datasource.druid.username填写数据库密码：spring.datasource.druid.password填写人脸识别id：config.freesdk.app-id填写人脸识别key：config.freesdk.sdk-key启动项目右键Application，选择Run ‘Application’项目访问地址http://127.0.0.1:8080/demo