如何防止 IntelliJ IDEA 删除未使用的软件包？

我正在使用 intelliJ，我的问题是，当我开始将一些临时的未使用的包导入到类文件 intelliJ 时，会在一秒钟内删除这些行。

我怎样才能关闭这个不太好的功能？

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最佳答案

Disable File | Settings | Editor | General | Auto Import | Optimize imports on the fly.

Normally you don't need to add imports manually, IDEA does it for you.

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In Intellij 14 : Settings > Editor > General > Auto Import > Optimize imports on the fly.

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(Update) For the Scala developers out there, you can have 1/2 the cake and eat the other 1/2 now: disable the auto-optimize for just scala

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For Scala developers: you can have enabled

Settings > Editor > General > Auto Import > Optimize imports on the fly

but add exclusions into

Settings > Editor > Code Style > Scala > Imports always marked as used:

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The above answers are obviously the way to go. Here's another quick fix (a bad one at that) is to simply use it somewhere in your code

if (0) console.log(LibraryName.version);

This should only be a temporary measure though.

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For me while using Go, this was caused by optimizing imports on save. IntelliJ IDEA -> Prefernces -> Tools -> Actions on Save -> Optimize imports.


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