blocks|key|1765361|text|AndroidStudioVersion2.2和更高版本提供了最新的嵌入式OpenJDK，以便为初学者提供一个较低的进入门槛。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765362|但是，建议您自己安装JDK，因为这样您就可以独立于Android更新它了。|1765363|如果您使用的是Android+<+24，那么您需要使用Java7编译这个项目，或者对启用Java+8功能执行一些额外的步骤。(注意:+Java+8支持相对较新)。|offset|length|1765364|AndroidStudio3.0及更高版本支持所有Java+7语言特性和Java+8语言特性的子集|1765365|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/studio/preview/features/java8-support.html^0|0|0|16|A|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$F|U|G|V|1|W]]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

Android Studio version 2.2 and higher comes with the latest OpenJDK embedded in order to have a low barrier to entry for beginners. 

It is, however, recommended to have the JDK installed on your own as you are then able to update it independent of Android Studio. 

<hr>

If you are working with an Android API &lt; 24, then you'll need to compile the project with Java 7 or do some extra steps to <a href="https://developer.android.com/studio/preview/features/java8-support.html" rel="noreferrer">enable Java 8 features</a>. (Note: Java 8 support is relatively new). 

Android Studio 3.0 and later supports all Java 7 language features and a subset of Java 8 language features

blocks|key|46212|text|这是谷歌在https://developer.android.com/studio/intro/studio-config.html上说的|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|46213|最新版本的OpenJDK与AndroidStudio2.2及更高版本捆绑在一起，这是我们建议您在安卓项目中使用的JDK版本。|blockquote|46214|因此，如果您使用的是最新版本的，那么您将不需要任何额外的JDK。此外，与2016年6月相比，正式的安装说明不再包含任何关于JDK的提示。|style|BOLD|46215|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/studio/intro/studio-config.html|1|https://web.archive.org/web/20160607055432/https://developer.android.com/studio/install.html^0|5|1P|0|0|0|F|G|10|7|1|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$]]|$1|G|3|H|5|6|7|Z|8|@$A|10|B|11|I|J]]|9|@$A|12|B|13|1|14]]|C|$]]|$1|K|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]|S|$5|N|O|P|C|$Q|T]]]]

This is what Google says on <a href="https://developer.android.com/studio/intro/studio-config.html" rel="noreferrer">https://developer.android.com/studio/intro/studio-config.html</a>:

<blockquote>
 A copy of the latest OpenJDK comes bundled with Android Studio 2.2 and higher, and this is the JDK version we recommend you use for your Android projects.
</blockquote>

So if you are using the newest version, you won't need any additional JDK. Furthermore, the official installation instructions don't include anymore any hints towards the JDK, compared to <a href="https://web.archive.org/web/20160607055432/https://developer.android.com/studio/install.html" rel="noreferrer">June 2016</a>.

blocks|key|46225|text|在Mac上，可以使用以下导出命令设置Android的Java环境的路径：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|46226|导出JAVA_HOME=/Applications/Android\+Studio.app/Contents/jre/jdk/Contents/Home/|46227|这使用了Android附带的JAVA+(OpenJDK)。|46228|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|$]]

On the Mac, the path for Android Studio's Java environment can be set with this export command:

export JAVA_HOME=/Applications/Android\ Studio.app/Contents/jre/jdk/Contents/Home/

This uses the JAVA (OpenJDK) that comes with Android Studio.

blocks|key|1765514|text|您过去需要安装一个JDK，因此视频告诉您如何安装JDK。最近的版本包括内置的JDK。请注意，Android发展很快，教程很快就过时了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765515|注意，安装Android并不会自动配置内置的JDK命令行工具。如果您想使用Android命令行工具，这很重要。要解决这个问题，请在Android安装中找到包含bin命令(实际运行Java的本机命令)中的java目录，并将其添加到您的路径中。(另一件事情可能会改变，所以我不会在这个答案中添加特定的目录。)该文件在Windows上是java.exe；在所有其他平台上，它都被称为java，并具有可执行权限。|offset|length|style|CODE|1765516|(您还需要添加包含SDK工具本身的目录。)|1765517|实际上有两个这样的目录，因为JDK和所有Java应用程序一样，包含一个(JRE)。如果您只想运行SDK工具，那么选择哪个bin目录并不重要。但是，如果您想在Android之外编译和运行Java代码，那么您需要使用包含bin命令的javac以及其他必要的JDK开发工具。|1765518|或者只需安装最新的JDK即可。没有真正的理由不去。|1765519|entityMap^0|0|27|3|2T|4|4L|8|58|4|0|0|1O|3|30|3|36|5|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@$D|R|E|S|F|G]|$D|T|E|U|F|G]|$D|V|E|W|F|G]|$D|X|E|Y|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|Z|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|10|8|@$D|11|E|12|F|G]|$D|13|E|14|F|G]|$D|15|E|16|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|17|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|O|$]]

You used to need to install a JDK; hence the videos telling you how to do it. Recent versions include a built-in JDK. Note that Android Studio has evolved rapidly, and tutorials quickly become obsolete.

Note that installing Android Studio doesn't automatically configure the built-in JDK command line tools. This matters if you want to use the Android SDK command line tools. To fix this, find the <code>bin</code> directory within the Android Studio installation that contains the <code>java</code> command (the native command that actually runs the Java Virtual Machine), and add it to your path. (Another thing that might change, so I won't add specific directories to this answer.) This file is <code>java.exe</code> on Windows; on every other platform it's called <code>java</code> and has executable permission. 

(You'll also need to add the directories containing the SDK tools themselves.)

There are actually two such directories, because the JDK, like all Java applications, contains a Java Runtime Environment (JRE). If you just want to run the SDK tools, then it doesn't matter which <code>bin</code> directory you choose. But if you want to compile and run Java code outside Android Studio, then you need to use the <code>bin</code> containing the <code>javac</code> command, among other essential JDK development tools.

Or you can just install the latest JDK. No real reason not to.

blocks|key|46336|text|显然不是。我经历了安装flutter的步骤，包括Android。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|46337|然而，flutter+doctor提出了一个问题：|offset|length|style|CODE|46338|✗+cmdline-tools+component+is+missing
++Run+`path/to/sdkmanager+--install+"cmdline-tools;latest"`
++See+https://developer.android.com/studio/command-line+for+more+details.|code-block|syntax|javascript|46339|我最终找到了路径/to/sdkmanager，它是|46340|/Users/<Mac+User+Name>/Library/Android/sdk/tools/bin/sdkmanager|46341|但接着跑|46342|/Users/<Mac+User+Name>/Library/Android/sdk/tools/bin/sdkmanager+--install+"cmdline-tools;latest"|46343|产生错误：|46344|The+operation+couldn’t+be+completed.+Unable+to+locate+a+Java+Runtime.
Please+visit+http://www.java.com+for+information+on+installing+Java.|46345|基于这个页面这样的帖子，我不情愿地开始考虑安装Java。但是，我发现Android+Studio中包含了Java，所以我运行了：|46346|+export+JAVA_HOME=/Applications/Android\+Studio.app/Contents/jre/Contents/Home|46347|但是后来|46348|/Users/<Mac+User+Name>/Library/Android/sdk/tools/bin/sdkmanager+--install+"cmdline-tools;latest"|46349|产生了一个例外：|46350|Exception+in+thread+"main"+java.lang.NoClassDefFoundError:+javax/xml/bind/annotation/XmlSchema
++++at+com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)|46351|但是，正如这里所指出的：https://flutter-examples.com/flutter-command-line-tools-component-is-missing/，解决方案是使用Android安装Android命令行工具(最新)。|46352|一旦我这样做了，就不再需要运行--install+"cmdline-tools;latest"，因为cmdline-tools;latest已经被Android安装了。|46353|然后，我能够运行flutter+doctor并按照说明让flutter+doctor不识别任何问题。|46354|我还要注意的是，直到我实际使用Android创建了一个项目之前，Android并没有下载其他sdk组件。|46355|除了Android之外，我还可以下载一个Android仿真器，并让该项目在没有安装Java的情况下在模拟器上运行|46356|entityMap|0|LINK|mutability|MUTABLE|url|https://flutter-examples.com/flutter-command-line-tools-component-is-missing/^0|0|3|E|0|0|0|0|0|0|0|0|0|0|0|0|0|0|C|25|0|0|F|W|1E|K|0|8|E|S|E|0|0|0^^$0|@$1|2|3|4|5|6|7|1S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1T|8|@$D|1U|E|1V|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|1W|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1X|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|1Y|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|S|3|T|5|J|7|20|8|@]|9|@]|A|$K|L]]|$1|U|3|V|5|6|7|21|8|@]|9|@]|A|$]]|$1|W|3|X|5|J|7|22|8|@]|9|@]|A|$K|L]]|$1|Y|3|Z|5|6|7|23|8|@]|9|@]|A|$]]|$1|10|3|11|5|J|7|24|8|@]|9|@]|A|$K|L]]|$1|12|3|13|5|6|7|25|8|@]|9|@]|A|$]]|$1|14|3|15|5|J|7|26|8|@]|9|@]|A|$K|L]]|$1|16|3|17|5|6|7|27|8|@]|9|@]|A|$]]|$1|18|3|19|5|J|7|28|8|@]|9|@]|A|$K|L]]|$1|1A|3|1B|5|6|7|29|8|@]|9|@$D|2A|E|2B|1|2C]]|A|$]]|$1|1C|3|1D|5|6|7|2D|8|@$D|2E|E|2F|F|G]|$D|2G|E|2H|F|G]]|9|@]|A|$]]|$1|1E|3|1F|5|6|7|2I|8|@$D|2J|E|2K|F|G]|$D|2L|E|2M|F|G]]|9|@]|A|$]]|$1|1G|3|1H|5|6|7|2N|8|@]|9|@]|A|$]]|$1|1I|3|1J|5|6|7|2O|8|@]|9|@]|A|$]]|$1|1K|3|-4|5|6|7|2P|8|@]|9|@]|A|$]]]|1L|$1M|$5|1N|1O|1P|A|$1Q|1R]]]]

Apparently not. I went through the steps to install flutter, including Android Studio.
However, <code>flutter doctor</code> produced an issue:
<pre><code>✗ cmdline-tools component is missing
 Run `path/to/sdkmanager --install &quot;cmdline-tools;latest&quot;`
 See https://developer.android.com/studio/command-line for more details.
</code></pre>
I eventually found the path/to/sdkmanager, which was
<pre><code>/Users/&lt;Mac User Name&gt;/Library/Android/sdk/tools/bin/sdkmanager
</code></pre>
but then running
<pre><code>/Users/&lt;Mac User Name&gt;/Library/Android/sdk/tools/bin/sdkmanager --install &quot;cmdline-tools;latest&quot;
</code></pre>
produced the error:
<pre><code>The operation couldn’t be completed. Unable to locate a Java Runtime.
Please visit http://www.java.com for information on installing Java.
</code></pre>
Based on posts such as this page, I reluctantly started looking at installing Java. However, I found that Java is included in Android Studio, so I ran:
<pre><code> export JAVA_HOME=/Applications/Android\ Studio.app/Contents/jre/Contents/Home
</code></pre>
but then
<pre><code>/Users/&lt;Mac User Name&gt;/Library/Android/sdk/tools/bin/sdkmanager --install &quot;cmdline-tools;latest&quot;
</code></pre>
produced an exception:
<pre><code>Exception in thread &quot;main&quot; java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
 at com.android.repository.api.SchemaModule$SchemaModuleVersion.&lt;init&gt;(SchemaModule.java:156)
</code></pre>
However, as indicated here: <a href="https://flutter-examples.com/flutter-command-line-tools-component-is-missing/" rel="nofollow noreferrer">https://flutter-examples.com/flutter-command-line-tools-component-is-missing/</a> , the solution was to use Android Studio to install the Android sdk Command-line Tools (Latest).
Once I had done that, there was no longer a need to run <code>--install &quot;cmdline-tools;latest&quot;</code> because the <code>cmdline-tools;latest</code> had already been installed by Android Studio.
I was then able to run <code>flutter doctor</code> and follow the instructions to get <code>flutter doctor</code> to not identify any issues.
I would also note that Android Studio did not download the other sdk components until I actually created a project with Android Studio.
I was able to download an Android emulator and get the project to run on the emulator without installing Java except what came with Android Studio

blocks|key|1765539|text|刚刚在studio.sh中添加了JAVA_HOME=/path/to/jdk和STUDIO_JDK=/path/to/jdk，一切都正常。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765540|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|$]]

Just added JAVA_HOME=/path/to/jdk and STUDIO_JDK=/path/to/jdk in studio.sh and everything works

blocks|key|1765597|text|我想在OpenJDK13上测试Android，而不是嵌入式jre11。我不想在控制面板中创建全局envvar+STUDIO_JDK+%7C+JAVA_HOME。我制作了一个小的studio-start.bat脚本来在定制的Java版本上运行Android。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1765598|Android+Studio+Bumblebee+%7C+2021.1.1+Build+#AI-211.7628.21.2111.8092744,+built+on+January+19,+2022有这个嵌入式的Java虚拟机。|1765599|c:\android-studio\jre\bin\java+-version
openjdk+version+"11.0.11"+2021-04-20
OpenJDK+Runtime+Environment+(build+11.0.11%2B9-b60-7590822)
OpenJDK+64-Bit+Server+VM+(build+11.0.11%2B9-b60-7590822,+mixed+mode)|code-block|syntax|javascript|1765600|我想尝试在这个Java上运行IDE。|1765601|C:\java\jdk-13.0.2\bin\java+--version
openjdk+13.0.2+2020-01-14
OpenJDK+Runtime+Environment+(build+13.0.2%2B8)
OpenJDK+64-Bit+Server+VM+(build+13.0.2%2B8,+mixed+mode,+sharing)|1765602|创建C:\android-studio\studio-start.bat脚本。|1765603|@REM+Use+custom+JDK+for+AndroidStudio+IDE
@set+basedir=%25~dp0
set+STUDIO_JDK=C:\java\jdk-13.0.2
call+"%25basedir%25bin\studio.bat

@rem+the+following+commands+did+not+use+a+custom+JDK+envvar.
@rem+start+"AndroidStudio"+/I+"%25basedir%25studio64.exe"
@rem+"%25basedir%25studio64.exe"|1765604|entityMap^0|1J|M|2E|G|0|0|2P|0|0|0|0|2|Y|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|15|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|16|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|17|8|@$9|18|A|19|B|C]]|D|@]|E|$]]|$1|S|3|T|5|J|7|1A|8|@]|D|@]|E|$K|L]]|$1|U|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]]|V|$]]

I wanted to test Android Studio on OpenJDK13 instead of an embedded jre11. I did not want to create a global envvar <code>STUDIO_JDK | JAVA_HOME</code> in a control panel. I made a small <code>studio-start.bat</code> script to run Android Studio IDE on a custom Java JDK version.
<code>Android Studio Bumblebee | 2021.1.1 Build #AI-211.7628.21.2111.8092744, built on January 19, 2022</code> has this embedded Java virtual machine.
<pre><code>c:\android-studio\jre\bin\java -version
openjdk version &quot;11.0.11&quot; 2021-04-20
OpenJDK Runtime Environment (build 11.0.11+9-b60-7590822)
OpenJDK 64-Bit Server VM (build 11.0.11+9-b60-7590822, mixed mode)
</code></pre>
I want to try run IDE on this Java.
<pre><code>C:\java\jdk-13.0.2\bin\java --version
openjdk 13.0.2 2020-01-14
OpenJDK Runtime Environment (build 13.0.2+8)
OpenJDK 64-Bit Server VM (build 13.0.2+8, mixed mode, sharing)
</code></pre>
Create <code>C:\android-studio\studio-start.bat</code> script.
<pre><code>@REM Use custom JDK for AndroidStudio IDE
@set basedir=%~dp0
set STUDIO_JDK=C:\java\jdk-13.0.2
call &quot;%basedir%bin\studio.bat

@rem the following commands did not use a custom JDK envvar.
@rem start &quot;AndroidStudio&quot; /I &quot;%basedir%studio64.exe&quot;
@rem &quot;%basedir%studio64.exe&quot;
</code></pre>

I'm learning Android Studio and the tutorials on youtube like: 

<a href="https://www.youtube.com/watch?v=QAbQgLGKd3Y&amp;list=PL6gx4Cwl9DGBsvRxJJOzG4r4k_zLKrnxl" rel="noreferrer">https://www.youtube.com/watch?v=QAbQgLGKd3Y&amp;list=PL6gx4Cwl9DGBsvRxJJOzG4r4k_zLKrnxl</a>

say I need the Java JDK.

Yet when I went through the tutorial at the website: 

<a href="https://developer.android.com/training/basics/firstapp/creating-project.html" rel="noreferrer">https://developer.android.com/training/basics/firstapp/creating-project.html</a>

I was able to setup and run the myfirstapp project. 

Does the new AS include the SDK or will I need it for more complicated projects. 
I guess I can just run through the video tutorial until I encounter a problem but I'd like to know before I have to uninstall Android Studio, install the JDK and reinstall Android Studio. 

Seems a real pain.

Do I need Java JDK for using Android Studio?

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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功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符

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社区新版编辑器体验调研

我正在学习Android和youtube上的教程，比如：假设我需要Java。然而，当我在网站上浏览教程时：我能够设置并运行myfirstapp应用程序项目。是新的，包括SDK，还是我将需要它为更复杂的项目。我想我可以只运行视频教程，直到遇到问题，但我想知道之前，我必须卸载Android，安装JDK和重新安装Android。看上去真的很痛苦。

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