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IDEA 2020.3.1 搭配 JDK 15.0.1开启--enable-preview的方法：

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Young-96

#1 Created at ... [Delete] [Delete and Lock User]

IDEA 2020.3.1 搭配 JDK 15.0.1开启--enable-preview的方法：

点击File -> Project Structure -> Project Settings -> Project选项卡，选择Project language level中的15 (Preview)这一项，然后点击OK。

Godspeed_ll

#2 Created at ... [Delete] [Delete and Lock User]

是需要重新再装一个15.01吗。不配，报错说无效15版本

Godspeed_ll

#3 Created at ... [Delete] [Delete and Lock User]

已解决装了16

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