blocks|key|1730486|text|是的，SDK和JDK是有区别的。大多数人忘记了Java平台不仅仅是用Java语言开发程序的。JVM还支持其他一些语言。因此，明确地说，SDK是支持使用各种语言创建软件的通用软件包，如Clojure、Groovy、Scala、JRuby和其他语言。JDK是用Java语言开发软件的特定捆绑包，包含了实现这一目的的所有Java标准API。(我希望我解释得很好，因为我实际上不会说英语)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1730487|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|$]]

Yes, there is a difference between the SDK and the JDK. 
Most of people forget that Java Platform is not only used to develop programs in Java language. The JVM supports some other languages also.
Thus, making it clear, the SDK is the generic bundle of software that supports software creation in a variety of languages like Clojure, Groovy, Scala, JRuby, and others.
The JDK is the specific bundle to develop software in Java language, containing all Java standard API to do so.
(I hope I've explaned it well, since I actually do not speak english)

blocks|key|1515561|text|JDK是Java的SDK。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1515562|SDK是“软件开发工具包”的缩写，这是一种开发人员的工具，可以让开发人员更轻松、更有效、更高效地编写代码。SDK支持多种语言。它们提供了大量的API(应用程序编程接口)，使程序员的工作变得容易。|1515563|​|1515564|📷|atomic|offset|length|1515565|1515566|用于Java的SDK称为JDK，即Java开发工具包。所以说SDK+for+Java实际上是指JDK。|1515567|假设您刚接触Java，那么您会遇到另一个术语--+JRE，Java+Runtime+Environment的首字母缩写。当您尝试运行用Java编写的软件程序时，JRE是您需要的东西。|1515568|Java是一种独立于平台的语言。JRE运行JVM，即Java虚拟机，它使您能够在JVM可用的任何平台上运行软件。|1515569|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/03324867fb128293d4554f80bf690932.png|imageAlt^0|0|0|0|0|1|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|13|8|@]|9|@$I|14|J|15|1|16]]|A|$]]|$1|K|3|E|5|6|7|17|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|18|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|19|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1A|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|S|$T|$5|U|V|W|A|$X|Y|Z|-4]]]]

JDK is the SDK for Java.

SDK stands for 'Software Development Kit', a developers tools that enables one to write the code with more more ease, effectiveness and efficiency.
SDKs come for various languages. They provide a lot of APIs (Application Programming Interfaces) that makes the programmer's work easy.

<a href="https://i.stack.imgur.com/TO6NR.png" rel="noreferrer"><img src="https://i.stack.imgur.com/TO6NR.png" alt="enter image description here"></a>

The SDK for Java is called as JDK, the Java Development Kit.
So by saying SDK for Java you are actually referring to the JDK.

Assuming that you are new to Java, there is another term that you'll come across- JRE, the acronym for Java Runtime Environment.
JRE is something that you need when you try to run software programs written in Java. 

Java is a platform independent language. The JRE runs the JVM, the Java Virtual Machine, that enables you to run the software on any platform for which the JVM is available.

blocks|key|1515477|text|摘自Java+EE+6+SDK安装程序，显示了SDK+6除了JDK之外还包含的内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1515478|​|1515479|📷|atomic|offset|length|1515480|1515481|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/5e8a564d5070880c6e3d5612dad680b3.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

Taken from the Java EE 6 SDK Installer, shows what SDK 6 contains besides JDK:

<img src="https://i.stack.imgur.com/gdLWY.png" alt="What SDK 6 contains, besides JDK">

blocks|key|1730017|text|Sun只是喜欢无缘无故地更改事物的名称。看一下SunOS/Solaris的三个不同的编号方案，或者Java的两个编号方案。是Java+1.6、Java+2版本6还是Java+6？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1730018|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|$]]

Sun just likes changing the names of things for no apparent reason. Look at the three different numbering schemes for SunOS/Solaris, or the two numbering schemes for Java. Is is Java 1.6, Java 2 Version 6, or Java 6?

blocks|key|1730281|text|JDK+(Java开发工具包)是SDK+(软件开发工具包)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1730282|它用于在Java上构建软件/应用程序，当然它还包括执行该软件的JRE+(Java+Runtime+Edition)。如果只想执行Java应用程序，那么只需下载JRE即可。|1730283|顺便说一句，Java+EE+(企业版)包含用于构建WEB环境的应用程序和用于移动设备的Java+ME+(Micro+Edition)的类库“带有方法(函数)”。如果你对它感兴趣(Java+)，我建议你看看谷歌的Android+DevKit和API。|1730284|看看这里:它将解释更多..http://www.oracle.com/technetwork/java/archive-139210.html|offset|length|1730285|entityMap|0|LINK|mutability|MUTABLE|url|http://www.oracle.com/technetwork/java/archive-139210.html^0|0|0|0|D|1M|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@$H|V|I|W|1|X]]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

The JDK (Java Development Kit) is an SDK (Software Dev Kit).

It is used to build software/applications on Java
and of course it includes the JRE (Java Runtime Edition) to execute that software.
If you just want to execute a Java application, download only the JRE.

By the way, Java EE (Enterprise Edition) contains libraries of packages of classes "with methods (functions)" to build apps for the WEB environment and Java ME (Micro Edition) for mobile devices. If you are interested in it (Java ME) I would recommend to take a look at Google's Android DevKit and API.

Take a look here: it's gonna explain bit more..
<a href="http://www.oracle.com/technetwork/java/archive-139210.html" rel="nofollow">http://www.oracle.com/technetwork/java/archive-139210.html</a>

blocks|key|1729953|text|JDK和Java+SDK之间没有区别。这两个词的含义是一样的。我认为这是Sun从JDK转向Java+SDK的公关决定。我认为现在又回到了JDK。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1729954|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|$]]

There's no difference between JDK and Java SDK. Both of them mean the same thing. I think it was a PR decision at Sun to change over from JDK to Java SDK. I think its back to JDK for now.

blocks|key|1515033|text|在我看来，JDK和SDK在java中没有区别。我们可以在它们中找到所有的开发工具和工具。它只是sun提供的一个别名。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1515034|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|$]]

In my point of view there is no difference between JDK and SDK in java. We can find all development tools as well as facilities in both of them. it is just an alias provided by sun.

blocks|key|1515104|text|这个问题的最佳示例SDK+-+Software+Development+Kit+-+Ex:+Netbeans+JDK+-+Java+Development+Kit。(这是Java编译器)。没有JDK，我们就无法在SDK中运行java程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1515105|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|$]]

Best example for this Question, SDK - Software Development Kit - Ex: Netbeans JDK - Java Development Kit.(This is Java compiler). Without JDK, we unable to run java programs in SDK.

blocks|key|1515300|text|这是没有区别的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1515301|Java软件开发工具包(Java+SDK)曾被称为Java开发工具包(JDK)，在Sun的营销部门对"tm“和术语着迷之前。出于政治原因&出于理智，他们将有意义的名称(jdk)和版本(1.2+/+1.3+/+1.4+1.5+/+1.6)称为“工程”术语。营销术语是"Java2平台“(又称JDK1.2到1.4)或Java5+(又称JDK1.5)或Java6+(又称jdk1.6)。我一想到这件事就头疼。|1515302|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|$]]

There is no difference. 

The Java Software Development Kit (Java SDK) used to be called the Java Development Kit (JDK) before the marketing department at Sun got crazy with the "tm" and terminology. For political reasons &amp; for sanity, they call the meaningful names (jdk) &amp; versions (1.2 / 1.3 / 1.4 1.5 / 1.6) "engineering" terms. The marketing terms are "Java2 platform" (aka jdk 1.2 thru 1.4) or Java5 (aka jdk 1.5) or Java6 (aka jdk1.6). I'm getting a headache just thinking about it.

blocks|key|1730360|text|我认为jdk有一些特定的特性，可以与特定的框架一起使用。我们称它为SDK作为一个整体。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1730361|与Android或黑莓一样，这两家公司的框架都使用了java。|1730362|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 think jdk has certain features which can be used along with particular framework. Well call it SDK as a whole.

Like Android or Blackberry both use java along with their framework.

blocks|key|1730087|text|有两个产品JavaSE和JavaEE。EE是允许开发和运行web应用程序的web应用程序/企业版。SE是没有EE规范的普通Java产品，但它是EE的一个子集。SE有两种类型，一种是JDK，一种是JRE。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1730088|有一个很大的区别可能并不明显，我不确定它是否适用于所有操作系统，但在Windows下，JRE没有服务器JDK+HotSpot，只有客户端JDK，JDK两者都有，据我所知，所有其他操作系统都有JDK和JRE。真正的区别在于JDK包含Java编译器，即JDK允许您从源代码编译和运行Java，而JRE只允许运行Java字节码，即已编译的源代码。是的，较新的版本捆绑了许多额外的组件，例如NetBeans编辑器环境和内存数据库中的Java+(derby/cloudscape)，但这些都是可选的。|1730089|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|$]]

There are two products JavaSE and JavaEE.
EE is the web application/enterprise edition that allows the development and running of web application.
SE is the plain Java product that has no EE specifics in it, but is a subset of EE.
The SE comes in two types a JDK and a JRE.

There is one big difference that may not be obvious, and I am not sure if it applies to all Operating Systems but under Windows the JRE does not have the server HotSpot JVM, only the client one, the JDK has both, and as far as I know all other OS's have both for the JDK and the JRE.
The real difference is the the JDK contains the Java compiler, that is the JDK allows you to compile and run Java from source code where as the JRE only allows the running of Java byte code, that is Source that has already been compiled.
And yes newer versions bundle a number of extra components, such as NetBeans editor environment and Java in memory Database (derby/cloudscape), but these are optional.

Is there any substantial difference between those two terms?. I understand that JDK stands for Java Development Kit that is a subset of SDK (Software Development Kit). But specifying Java SDK, it should mean the same as JDK.

Differences between JDK and Java SDK

软件开发

数据库

服务器

虚拟机

编译器

Android

Windows

Solaris

Java

这两个术语之间有本质上的区别吗？我知道JDK代表Java Development Kit，它是SDK (Software Development Kit)的一个子集。但如果指定Java SDK，它的含义应该与JDK相同。

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