blocks|key|1537423|text|我赞同这些建议，以应对SCJP，或者找到其他方法来尽可能深入地研究这种语言(特别是因为它不是一种特别深入的语言...)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1537424|但是，大多数日常开发工作都是在围绕Java的库和框架中进行的。所以下面是我下一步要学习的简短清单：|1537425|1537426|Spring|unordered-list-item|1537427|JSP+(与之前的帖子所说的相反，它们无处不在，所以您需要了解them)|1537428|JSF|1537429|JPA/Hibernate/iBatis|1537430|Tomcat/JBoss/GlassFish|1537431|1537432|Java现在已经足够成熟，在学习Java时，您会觉得自己正在追赶许多其他开发人员，但您也会注意到框架中反复出现的许多模式(比如无处不在的XML配置地狱)。|1537433|祝好运!|1537434|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|G|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|G|7|11|8|@]|9|@]|A|$]]|$1|L|3|M|5|G|7|12|8|@]|9|@]|A|$]]|$1|N|3|O|5|G|7|13|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|15|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

I second the recommendations to take on the SCJP, or find some other way to delve as deep as you can into the language (especially because it's not a particularly deep language...). 

But most of your day-to-day development work will be in the libraries and frameworks that surround Java. So here's my short list of what to study next:

<ul>
<li>Spring</li>
<li>JSP (contrary to what a previous poster said, they're everywhere, so you need to know them)</li>
<li>JSF</li>
<li>JPA/Hibernate/iBatis</li>
<li>Tomcat/JBoss/GlassFish</li>
</ul>

Java is mature enough now that you'll feel like you're playing catch-up to a lot of other developers while you're learning these, but you'll also notice a lot of patterns that reappear in frameworks over and over (like the ubiquitous XML configuration hell).

Good luck!

blocks|key|331879|text|由于纯Java是所有Java技术的核心，我认为它仍然非常有用。我仍然建议从Java、servlet和JSP开始，并以JDBC作为基础。您可以根据需要从那里扩展。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|331880|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Since pure Java is at the core of all the Java technologies out there, I'd argue that it is still quite useful. I'd still recommend starting with Java, servlets and JSP, and JDBC as a foundation. You can branch out from there as needed.

blocks|key|1633527|text|纯Java不是很有用吗？这就像是说，传统语言中的单词和语法在写故事或诗之类的东西时并不是很有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1633528|首先了解基础知识。在这样做的同时，你会自动发现你需要什么或最喜欢什么。|1633529|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Pure Java is not very useful? That is like saying that words and grammar in a traditional language are not very useful when writing something like a story or a poem.

First understand the basics. You will automatically discover what you need or like most while doing that.

blocks|key|1537185|text|首先要研究JVM的工作原理。即使Java死了(一个漫长而痛苦的死亡)，JVM肯定会存活下来并蓬勃发展，因为它是许多新的有趣语言(Scala、Clojure、Jython等)的框架。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1537186|您的知识投资将是安全的。|1537187|entityMap^0|5|3|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

Study the JVM workings above all. Even if Java dies (a long and painful death), the JVM will definitely survive and thrive as it is the framework of many newer interesting languages (Scala, Clojure, Jython, etc).

Your knowledge investment will be secure.

blocks|key|1633512|text|我认为你应该专注于基础知识。强大的基础将确保您将来处理的任何技术对您来说都将是容易的。专注于线程、网络和I/O。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1633513|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I think you should concentrate on the basics.
a strong base will make sure that whatever technology you deal with in the future will be easy for you.
focus on threading, networking and I/O.

blocks|key|131839|text|这有点像问你要买什么车，没有任何信息，你开到哪里，你的需求是什么，等等。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|131840|最重要的是，确保您很好地理解了Core+Java。一个优秀的开发人员只需查看他们的JavaDocs就可以很容易地学习新的API。一个糟糕的程序员可以使用很多API，但可能不了解线程之类的核心内容。或者打个比方，毕加索可以用一块煤画出令人惊叹的东西，但你的孩子不是毕加索，因为他可以使用所有的蜡笔画调色板。|131841|要明白，你不可能无所不知，也不可能成为每件事的专家，并找出你所关心的领域。如果你不做富UI，就跳过Swing。如果你想学习数据库，可以学习JDBC和Hibernate。如果你想做大型web应用程序或企业应用程序，可以看看J2EE。|131842|这一事实经常被工作列表所掩盖，这些工作列表只是简单地列出了一个彼此无关的30种技术的愿望列表(我见过我分享的“web程序员谁是Swing专家”)等等。|131843|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

That's a little like asking what car to buy, without any information or where you drive, what your needs are, etc. 

Most importantly, make sure you understand Core Java well. A good developer can easily learn new APIs just from looking at their JavaDocs. A bad programmer can use a lot of APIs, but may not know his way around core things like threading. Or as an analogy, Picasso could draw amazing things with a single piece of coal, but your kid isn't a Picasso just because he can use all the palette of Crayolas. 

Understand that you can't know everything or be an expert at everything, and figure out the domains you care about. If you don't do rich UIs, skip Swing. If you might do databases, learn JDBC and Hibernate. If you would be doing large web applications or enterprise applications, look at J2EE. 

This fact is often obfuscated by job listings, that simply have a wish list of 30 technologies that are unrelated to one another (I've seen my share of 'web programmer who is a Swing expert') and such.

blocks|key|331821|text|最需要的Java技术|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|331822|基于web的Applications|331823|Enterprise+Applications|unordered-list-item|331824|
|331825|Java+web服务库，如|331826|和Weblogic|ordered-list-item|331827|JSP、Servlet、自定义标记、JDBC、XML/XSL、EJB、JMS、JTA和JUnit|331828|BEA+Weblogic应用程序服务器和/或IBM+Websphere应用程序。|331829|331830|331831|Servers|331832|J2EE设计Patterns|331833|331834|J2EE框架(如Spring和JSF)、面向Subversion/Git/CVS|331835|331836|Object的设计和UML+|331837|331838|J2EE|331839|331840|JPA框架(如Hibernate和JPA)，以及解决数据库问题的技能和使现有系统适应快速变化的design|331841|331842|Strong可伸缩客户的能力|331843|331844|solutions|331845|entityMap^0|0|A|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1L|8|@$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1O|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1P|8|@]|D|@]|E|$]]|$1|K|3|L|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|M|3|N|5|J|7|1R|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1S|8|@]|D|@]|E|$]]|$1|R|3|S|5|Q|7|1T|8|@]|D|@]|E|$]]|$1|T|3|U|5|Q|7|1U|8|@]|D|@]|E|$]]|$1|V|3|-4|5|6|7|1V|8|@]|D|@]|E|$]]|$1|W|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]|$1|X|3|Y|5|6|7|1X|8|@]|D|@]|E|$]]|$1|Z|3|10|5|J|7|1Y|8|@]|D|@]|E|$]]|$1|11|3|L|5|6|7|1Z|8|@]|D|@]|E|$]]|$1|12|3|13|5|J|7|20|8|@]|D|@]|E|$]]|$1|14|3|L|5|6|7|21|8|@]|D|@]|E|$]]|$1|15|3|16|5|J|7|22|8|@]|D|@]|E|$]]|$1|17|3|L|5|6|7|23|8|@]|D|@]|E|$]]|$1|18|3|19|5|J|7|24|8|@]|D|@]|E|$]]|$1|1A|3|L|5|6|7|25|8|@]|D|@]|E|$]]|$1|1B|3|1C|5|J|7|26|8|@]|D|@]|E|$]]|$1|1D|3|L|5|6|7|27|8|@]|D|@]|E|$]]|$1|1E|3|1F|5|J|7|28|8|@]|D|@]|E|$]]|$1|1G|3|-4|5|6|7|29|8|@]|D|@]|E|$]]|$1|1H|3|1I|5|6|7|2A|8|@]|D|@]|E|$]]|$1|1J|3|-4|5|6|7|2B|8|@]|D|@]|E|$]]]|1K|$]]

Most Needed Java Technologies

<ol>
<li>Web-Based Applications</li>
<li>Enterprise
 Applications</li>
<li>Java web service
 libraries like Axis and Weblogic</li>
<li>JSP, Servlets, Custom Tags, JDBC,
 XML/XSL, EJB, JMS, JTA and JUnit</li>
<li>BEA Weblogic application servers
 and/or IBM Websphere application 
 Servers</li>
<li>J2EE Design Patterns</li>
<li>J2EE frameworks like Spring and JSF</li>
<li>JPA frameworks like Hibernate and
 TopLink</li>
<li>Eclipse IDE and
 Subversion/Git/CVS</li>
<li>Object
 Oriented Design and UML diagrams</li>
<li>Oracle, SQL, and database design</li>
<li>Strong problem solving skills and
 ability to adapt existing systems to
 fast-changing requirements</li>
<li>Production Support</li>
<li>UNIX/Linux environment</li>
<li>Building scalable customer 
 solutions</li>
</ol>

blocks|key|1633479|text|hai+nicholas，选择struts、spring和hibernate而不是jsp……|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1633480|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

hai nicholas,
 Go for struts,spring and hibernate instead of jsp.....

blocks|key|1633572|text|你真的应该从纯Java开始。从其他事情开始就像在你不能行走的时候尝试跑步一样。之后你学到的每一个框架都会更容易理解。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1633573|试着找一本好书或一些基础知识，对我个人来说，为了SCJP认证而学习真的很管用，如果你自己对考试不感兴趣，这本书仍然非常有教育意义：|1633574|SCJP+Sun+Certified+Programmer+for+Java+6|offset|length|1633575|entityMap|0|LINK|mutability|MUTABLE|url|https://rads.stackoverflow.com/amzn/click/com/0071591060^0|0|0|0|14|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@$F|S|G|T|1|U]]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

You really should start with pure Java. Starting with anything else is like trying to run when you can't walk. Every framwork you'll learn afterwards will be much easier to understand.

Try to get a good book or something about the basics, for me personally studying for the SCJP certification really did the trick, if you're not interested in taking the exam yourself the book is still very educating:

<a href="https://rads.stackoverflow.com/amzn/click/com/0071591060" rel="nofollow noreferrer" rel="nofollow noreferrer">SCJP Sun Certified Programmer for Java 6</a>

blocks|key|331800|text|纯Java也很有用，把它看作你想要做的基础，你需要理解你使用的框架的基础，但要切中要害。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|331801|我会学习JSP和servlets+(改变的是你要做一个Web应用程序，这将帮助你学习基础知识)|331802|此外，Hibernate和Spring目前非常流行。|331803|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Pure Java is useful as well, see it as the basis of you want to do it, you need to understand the basics of the frameworks you use, but to the point.

I would learn JSP's and servlets (Changes are you are going to do a Web app and this will help you with the basics)

Also Hibernate and Spring are very popular at the moment.

I'm new in Java. I'm studying this program language and I guess that pure Java is not very useful. Can you advice me what related technologies / frameworks I should to study firstly?

What Java technologies are most needed now?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我是新来爪哇的。我正在学习这种编程语言，我猜纯Java并不是很有用。你能建议我应该首先研究哪些相关的技术/框架吗？

问现在最需要的Java技术是什么？
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