Java 在idea ide中获得菱形运算符的编译错误
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getting compile error for diamond operator in idea ide
提问by Ashish Yadav
I am getting this error while trying to compile some simple source code in idea ide.
尝试在idea ide中编译一些简单的源代码时出现此错误。
java: diamond operator is not supported in -source 1.6 (use -source 7 or higher to enable diamond operator)
jdk is 1.7.40 from oracle
jdk 是 oracle 的 1.7.40
but where is this place to add this "-source 7" option?
但是这个地方在哪里添加这个“-source 7”选项？
i tried adding in ide settings but that had no effect.
我尝试添加 ide 设置，但没有效果。
回答by Abimaran Kugathasan
Check Project Structure tab in IDEA, find the followng navigational path
检查 IDEA 中的项目结构选项卡，找到以下导航路径
Project Structure-> Project-> Project SDK
Project Structure-> Project->Project SDK
回答by Abimaran Kugathasan
You need to set the project language level (default for all modules) andthe module(s) language level
您需要设置项目语言级别（所有模块的默认值）和模块语言级别
回答by Makoto
Make sure that, in the Project Structure page, you have set your project language level to 7.0.
确保在“项目结构”页面中，您已将项目语言级别设置为 7.0。
After you select this, you will have to reopen your project, but then your diamond operators should compile.
选择此选项后，您将不得不重新打开您的项目，但您的钻石操作符应该会编译。
回答by Ruchira Gayan Ranaweera
Follow these steps.
按着这些次序。
Right Click on the project------>> go to Open module Settings--->
In that opening window click the Project in project settings---->
and set project SDK
