blocks|key|2777429|text|java的长处在于它的jvm和大量可用的开源库。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2777430|几年前的编程语言确实很好，但现在有了更好的语言，其中一些语言也可以在jvm上运行(scala、groovy)。|2777431|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|$]]

the strength of java is the jvm and the tons of opensource libraries available.

the programming language was certainly good some years ago, but now there are better languages, and some of them run on the jvm too (scala, groovy).

blocks|key|825342|text|强制异常规范。哦，等等，你想要有用的...！|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|825343|很抱歉给您添麻烦，但是Java和所有其他语言一样，承载着它的特性和实验的重担。其中一些成功了(Java确实帮助将接口推到了静态类型检查的OO语言的前沿，以及内置的文档生成，即使这不是第一次尝试)，而另一些则没有(见上文)。|825344|我怀疑你是否能找到在其他语言中找不到、复制或模仿不到的独特而有用的Java特性。Java独特的优点(和缺点)是特定特性、现有工具和库以及广泛的开发技能的组合。|825345|entityMap^0|F|3|0|0|24|2|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|K|$]]

Mandatory exception specifications. Oh, wait, you wanted useful...!

Sorry for the dig, but Java, like all other languages, carries its burden of idiosyncracies and experimentation. Some of it worked out (Java really helped push interfaces to the forefront of statically type checked OO languages, as well as built in documentation generation, even if it was not the first attempt at either), while some of it didn't (see above). 

I doubt you're going to find unique and useful Java features which cannot be found, copied or emulated in other languages. What's uniquely good (and bad) about Java is the combination of particular features, existing tools and libraries, and wide-spread development skills out there.

blocks|key|461976|text|Java's+Object+Oriented+Enums.|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|461977|(当然，您可以在其他语言中模拟它们；但据我所知，Java恰好是唯一一种具有对它们的语言级支持的语言。)|461978|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/j2se/1.5.0/docs/guide/language/enums.html^0|0|T|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

<a href="http://java.sun.com/j2se/1.5.0/docs/guide/language/enums.html" rel="noreferrer">Java's Object Oriented Enums.</a>

(Of course you can emulate them in other languages; but in my knowledge Java happens to be the only language which has language level support for them.)

blocks|key|4243412|text|我猜你不能说出其他语言没有的Java特性，只有一个:有大量的开源/免费框架和库。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4243413|对于你遇到的每个问题，都有一个库。你想要一个http客户端？以Apache+one为例。一个强大的Dependeny注入框架？Spring或Struts或其他任何东西。需要一个免费的服务器来部署整个东西吗？汤姆猫。O/R-映射？带注解的Hibernate。或者iBatis。将整个项目与maven2结合起来，您的项目就可以开始了，管理所有这些依赖项。|4243414|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|$]]

I guess you cannot name a feature of Java that no other language has except for one:
The amount of open-source/free frameworks and libraries that are out there.

For every problem you encounter there's a library. You want a http client? Take the Apache one.
A powerful Dependeny Injection framework? Spring or Struts or whatever else.
Need a free server to deploy the whole thing? Tomcat.
O/R-Mapping? Hibernate with Annotations. Or iBatis.
Combine the whole thing with maven2 and your project is ready to go, managing all these dependencies.

blocks|key|2777402|text|我认为，java是唯一一种被认为是平台和框架的语言。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2777403|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|$]]

One i think is that, java is the only language which is considered to be a Platform and a Framework.

blocks|key|4243539|text|虽然从技术上讲，它是实现的一个属性，但垃圾收集器的卓越质量和内存管理通常“就是工作”的事实，即使您关心性能，也从未停止过给我留下深刻印象。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4243540|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|$]]

Though it's technically a property of the implementation, the outstanding quality of the garbage collector and the fact that memory management usually "just works" even when you care about performance never ceases to impress me.

blocks|key|2777474|text|你的表单可能有不同的layout-options/layout+managers(clickable)？|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2777475|尽管如此，由于WPF是基于向量的，所以WPF正在取得进展。|2777476|entityMap|0|LINK|mutability|MUTABLE|url|http://java.sun.com/docs/books/tutorial/uiswing/layout/using.html^0|A|15|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

The different <a href="http://java.sun.com/docs/books/tutorial/uiswing/layout/using.html" rel="nofollow noreferrer">layout-options/layout managers(clickable)</a> for your forms maybe?

Altho, WPF is gaining ground 'cause of being vectorbased.

blocks|key|825329|text|Jave是唯一具有java编译器和java语法的语言。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|825330|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|$]]

Jave is the only language that has a java compiler and a java syntax.

blocks|key|4243446|text|我想我或多或少都同意这一点，但是你可以告诉他们Java最好的特性就是你知道如何使用它进行开发。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4243447|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 I agree more or less on everything, but the best feature you can tell them Java has is that you know how to develop with it.

blocks|key|831596|text|Java's+Excellent+Concurrency+Library.|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|831597|与其说这是一种语言特性，不如说它是一种库特性，但在并发性方面，它仍然给了Java一些优于.NET的优势。(请注意，您也可以从其他JVM语言使用这些库。)|831598|entityMap|0|LINK|mutability|MUTABLE|url|http://www.uni-muenster.de/ZIV.BennoSueselbeck/java/jdk1.5.0_01/docs/api/java/util/concurrent/package-summary.html^0|0|11|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

<a href="http://www.uni-muenster.de/ZIV.BennoSueselbeck/java/jdk1.5.0_01/docs/api/java/util/concurrent/package-summary.html" rel="nofollow noreferrer">Java's Excellent Concurrency Library.</a>

This is more of a library feature than a language feature but it still gives Java some edge over .NET when it comes to concurrency. (Please note that you can use these libraries from other JVM languages as well.)

blocks|key|831603|text|匿名内部类(而不是闭包)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|831604|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|$]]

Anonymous inner classes (instead of closures)

blocks|key|461955|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|461956|语言是类型安全的|unordered-list-item|461957|强大的工具支持(IDE、容器、构建工具(Ant、Maven)、来自多个Java平台的Maven独立的|461958|无内存泄漏:P|461959|Java+Community+Process+(JCP)+|461960|Java+Specification+Requests+(JSR)|461961|<代码>F211|461962|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|P|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|Q|7|@]|8|@]|9|$]]|$1|D|3|E|4|C|6|R|7|@]|8|@]|9|$]]|$1|F|3|G|4|C|6|S|7|@]|8|@]|9|$]]|$1|H|3|I|4|C|6|T|7|@]|8|@]|9|$]]|$1|J|3|K|4|C|6|U|7|@]|8|@]|9|$]]|$1|L|3|M|4|5|6|V|7|@]|8|@]|9|$]]|$1|N|3|-4|4|5|6|W|7|@]|8|@]|9|$]]]|O|$]]

<ul>
<li>The language is type safe</li>
<li>Great tool support(IDEs, Containers, Build tools(Ant, Maven), Maven from multiple vendors</li>
<li>(Mostly) platform independent</li>
<li>No memory leaks :P</li>
<li>Java Community Process (JCP) and Java Specification Requests (JSR)</li>
</ul>

I want to know some features which are very useful and specific to java. As i am java developer, when people asks me about some good programming features which are available in java not in any other languages, then which you think i can tell them.

That is, if i tell these features to them, then they should find out that i am a java developer.

What are those features which java has and others dont?

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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我想知道一些非常有用和特定于java的特性。因为我是java开发人员，当人们问我一些在java中没有其他语言的好的编程特性时，你会认为我可以告诉他们。也就是说，如果我告诉他们这些特性，那么他们应该会发现我是一名java开发人员。

问哪些特性是java拥有而其他语言没有的？
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问哪些特性是java拥有而其他语言没有的？
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