What technologies do java development need to master?

Java environment construction, Java process control statement -for loop, switch selection judgment, loop nesting, array bai copy, multidimensional array, final keyword, call of constructor, access right and path of class, advanced object-oriented features, Java exception handling, Set, Map, List interface and interface implementation class, Java thread, synchronization blocking, Java IO stream, file operation, copy, reading and writing, deletion, etc.

The second stage JavaWeb:MySql installation, management, database creation, Mysql update query, Mysql advanced operation, JDBC, JDBC database connection operation, JDBC dynamic sql processing, Servlet3.0 web page redirection, Servlet3.0 new annotation support, AJAX, responseText attribute details, etc.

In the third stage, Java advanced framework -SSH: Struts2 exception handling, Struts2+Log4j integration, Struts2 and JSON instances, Hibernate5, Hibernate set mapping, Hibernate component mapping, Spring4.0, Spring AOP+AspectJ framework, Spring integration with other Web frameworks, Spring Hibernate support, etc.

The fourth stage, Java advanced framework-SSM:SpringMVC, JSON data generated by SpringMVC, MyBatis, MyBatis environment configuration and entrance, Mybatis set tag, Mybatis trim tag, Shiro, Shiro quick start tutorial, Shiro Web application, etc.

The fifth stage, SpringBoot+VUE full stack framework: SpringBoot, Global Exception Handling, Filter Listener, EHCache Cache, SpringBoot Quartz Timed Task, VUE, Vue.js Installation, Template Grammar, Calculation Attribute, Event Handler, Vue.js Custom Instruction, Vue.js Routing, etc.

The sixth stage, featured courses: ActiveM environment construction, producers and consumers, message persistence operation, RSA digital encryption algorithm, Codebar barcode generator, zxing QR code generator, HighCharts statistical chart, Echarts statistical chart, network player ckplayer, embedded network player, browser and mobile terminal can all be used at will.

Advanced application of internet framework in the seventh stage 1: understanding of distributed service framework, detailed explanation of Dubbo architecture design and its core points, analysis of framework operation principle, introduction of SpringData data access, Lucene search engine, Lucene full-text search server, index construction method, Solr massive data search engine, Socket network communication, RMI remote object communication, using JMS message service, Kafka distributed message system, Web service and restful.

The eighth stage, advanced application of Internet framework 2:Spring Security security framework, realizing WEB application security control, caching application and EhCache framework, Oscar and JBossCache framework, MyBatis and Hibernate caching mechanism, NoSQL application and SQL tuning, MongoDB NoSQL database, Redis memory database, Redis Session***, optimization of SQL statements, separation of database reading and writing, clustering of Web applications and performance optimization, Maven project management tools, load balancing of Web servers, implementation of Nginx and Tomcat clustering, use of LoadRunner test tools, memory tuning for performance optimization and code optimization methods.

Friends who are interested in java may wish to start with the introduction of java! There are many java teaching videos, from basic to advanced, which are quite good, with detailed knowledge points and a full version of the learning roadmap. You can also go and see for yourself and download and study.