Java Learning Guide-guiding you to a better technical path!

I recently saw an article on the network on the technical progress tier of Java learners. After reading this article, I feel very good. I have reposted this article to the Java fans and hope to help you!

As follows :....

1. You need to be proficient in Object-Oriented Analysis and Design (OOA/OOD), involved models (gof, j2eedp), and integrated models. You should be familiar with UML, especially class, object, interaction, and statediagrams.

2. You need to learn the basic knowledge of the Java language and its core class libraries (collections, serialization, streams, networking, multithreading, reflection, event, handling, NiO, localization, and others ).

3. You should understand JVM, classloaders, classreflect, and the basic working mechanism of garbage collection. You should be able to decompile a class file and understand some basic assembly commands.

4. If you want to write a client program, you need to learn the Web applet, the idea and method of GUI Design, and the swing, AWT, and SWT of the desktop program. You should also have some knowledge about the UI component's JavaBean Component Mode. JavaBeans are also applied in JSP to separate the business logic from the presentation layer.

5. you need to learn Java database technology, such as jdbcapi and use at least one persistence/ORM architecture, such as Hibernate, JDO, cocobase, toplink, insideliberator (domestic JDO red factory software) or ibatis.

6. you should also understand the meaning of the impedance mismatch of the object relationship, and how it affects the interaction between the business object and the relational database, and its running results, you also need to master the use of different database products, such as Oracle, MySQL, and MSSQLServer.

7. You need to learn about the Java sandbox security mode (classloaders, bytecodeverification, managers, policyandpermissions,
Codesigning, digitalsignatures, cryptography, certification, Kerberos, and others) have different security/authentication APIs, such as JAAS (pipeline), JCE (javacryptographyextension), JSSE (javasecuresocketextension ), and jgss (javageneralsecurityservice ).

8. You need to learn about Servlets, JSP, and jstl (standardtaglibraries) and third-party taglibraries that can be selected.

9. You need to be familiar with mainstream web frameworks, such as JSF, struts, tapestry, cocoon, webwork, and the following involved modes, such as MVC/model2.

10. You need to learn how to use and manage Web servers, such as Tomcat, resin, and JRun, and know how to expand and maintain web programs based on them.

11. You need to learn distributed objects and remote APIs, such as RMI and RMI/IIOP.
12. You need to master various popular middleware technical standards and implement them in combination with Java, such as tuxedo and croba, and of course javaee itself.

13. You need to learn at least one xmlapi, such as JAXP (javaapiforxmlprocessing), JDOM (javaforxmldocumentobjectmodel), dom4j, or jaxr (javaapiforxmlregistries ).

14. You should learn how to use Java API and tools to build WebService. For example, JAX-RPC (javaapiforxml/RPC), SAAJ (container), jaxb (javaarchitectureforxmlbinding), jaxm (javaapiforxmlmessaging), jaxr (javaapiforxmlregistries), or jwsdp (javawebservicesdeveloperpack ).

15. You need to learn a lightweight application framework, such as spring, picocontainer, aveon, and their IOC/di style (setter, constructor, interfaceinjection ).

16. You need to be familiar with different J2EE technologies, such as JNDI (javanaminganddirectoryinterface), JMS (javamessageservice), JTA/JTs (javatransactionapi/javatransactionservice), JMX (callback), and javamail.

17. you need to learn enterprise-level JavaBeans (EJB) and their different component modes: stateless/statefulsessionbeans, entitybeans (containing bean-managedpersistence [BMP] or container-managedpersistence [CMP] and its EJB-QL), or message-drivenbeans (MDB ).

18. You need to learn how to manage and configure a J2EE application server, such as Weblogic and JBoss, and use its additional services, such as cluster, connection pool, and distributed processing support. You also need to know how to encapsulate and configure an application on it and monitor and adjust its performance.

19. You need to be familiar with Aspect-Oriented Programming and Attribute-oriented programming (both of which are easily confused by AOP), as well as their mainstream Java specifications and execution. For example, aspectj and aspectwerkz.

20. You need to be familiar with different useful APIs and frame work to serve you. For example, log4j (logging/tracing), quartz (scheduling), jgroups (networkgroupcommunication), jcache (distributedcaching), Lucene (full-textsearch), and jakartacommons.

21. If you want to connect to or align with the old system or local platform, you need to learn JNI (javanativeinterface) and JCA (javaconnectorarchitecture ).

22. You need to be familiar with Jini technology and distributed systems related to it, such as croba.

23. You need javacommunityprocess (JCP) and its different metrics pecificationrequests (jsrs), such as portlets (168), jolap (69), dataminingapi (73), and so on.

24. You should be familiar with a Java ide such as SunONE, netbeans, intellijidea or eclipse. (Some prefer VI or Emacs to write files. Whatever you use :)

25. Java (precisely some configurations) is lengthy and requires a lot of manual code (such as EJB). Therefore, you need to be familiar with code generation tools, such as XDoclet.

26. You need to familiarize yourself with a unit testing system (jnunit) and learn different generation and deployment tools (Ant and Maven ).

27. You need to be familiar with some software engineering processes that are frequently used in Java development. For example, rationaluniiedprocess andagilemethodologies.

28. You need to be able to gain an in-depth understanding of the addition of skilled operations and configuration of different operating systems, such as GNU/Linux, sunsolaris, and MacOS, as cross-platform software developers.

29. You also need to keep up with the pace of Java development. For example, you can now study javame in depth and use various new Java specifications and technologies, such as the new web rich client technology.

30. You must understand opensource, because at least many Java technologies are directly driven by open source, such as Java3D technology.