intellij功能（...）不支持在此语言级别。我无法编译 [英] intellij feature (...) not supported at this language level. I can't compile
问题描述
将SDK / JDK与Project语言级别匹配
要在编辑器中激活Java语言功能，更改模块的项目结构或模块设置以确保您的项目SDK 与项目语言级别项目SDK（JDK）Java 1.5匹配项目语言级别5 ...
Java 1.6匹配语言级别6。 Java的1.7匹配语言级别7，等等。
示例
根据您的IntelliJ版本，在项目窗格的模块上点击 F4 或 Ctrl + Alt + Shift + S ，或点击 Ctrl + Shift - 并键入项目结构或模块设置打开项目结构对话框。
$ b 在项目设置部分下，点击列表中的第一项项目。 b
$ b
在下面的截图中，项目SDK 1.8（java版本'1.8.0_72'）匹配所选语言级别<$ c $因为Java 1.8与SDK级别8匹配。这会激活用于编辑器的Java 8语言功能。 / p>
如果您没有设置JDK Project SDK 这是一个不同的问题。通过点击 New 并添加一个JDK来解决这个问题。
IntelliJ is showing me this error
I just built my new computer and none of my java stuff is working... My regular Intellij was working when I first tried it, but my android studio would't install because it couldn't find the path to the jdk. Here is the question that I asked about that. Since that wasn't working, I had to reinstall java multiple times, and now my IntelliJ isn't working. Here is a picture of the error (I am getting an error that is telling me the for-each loops aren't supported at this language level).
I have tried to install the JDK on my D: drive and that didn't work. I am currently trying to use java 1.8u71 (have tried u65 and 1.7u47) except none of those have worked.
IntelliJ is showing me this error
Matching the SDK/JDK with Project language level
To activate Java language features in the editor, you need to change your module's Project Structure or Module Settings to ensure your Project SDK matches the Project language level.
Project SDK (JDK) Java 1.5 matches project language level 5 ...
Java 1.6 matches language level 6 ...
Java 1.7 matches language level 7, and so on.
Example
Depending on your IntelliJ version, hit F4 or Ctrl + Alt + Shift - S on your module in the Project pane, or hit Ctrl + Shift - A and type either "Project Structure" or "Module Settings" to open the Project Structure dialog.
Under Project Settings section, click on the first item in the list, Project.
In the screenshot below, the Project SDK 1.8 (java version '1.8.0_72') matches the selected language level SDK Default (8 - Lambdas, type annotations etc.) because Java 1.8 matches SDK level 8. This activates the Java 8 language features for use in the editor.
If you don't have the JDK set up under Project SDK that is a different problem. Solve that one first by clicking New and adding a JDK.
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