How to delete all unused imports from current project in Intellij Idea

Question

I have been using Intellij Idea for quite some time now. I have a few questions though. Is there a way to delete all unused imports from all files in the current project?

I know that I can choose menu item Code > Optimize Imports (CTRL + ALT + O) to organize imports in individual files but since the application that I am working on has hundreds of files, this process does not make any sense. If there is no way of doing this, can I create a macro for this? If so, how do I do it?

Doctorate

The question really is: Why wasn't that done as the files were created/edited? Unused imports should have shown as a warning, and anyone checking in code with warnings needs to be penalized, e.g. by forcing them to do this one file at a time. – Degeneration

@Degeneration I do agree with you. But you see, for old applications, I guess the developers went sloppy with the approach. However, for all the new applications that we are developing, we make sure that the rules are set in Sonar Cube – Doctorate

Answer 1

Click the project folder, then enter CTRL + ALT + O. It will handle all files under the folder:

Leprosarium

I tried this and it worked (I guess). Does this process notify somewhere the number of imports that were deleted? – Doctorate

@Doctorate I do not think it will. May be you can use the version control tool, such as Git, to see the differences. – Leprosarium

Ah! Nice idea. Thanks. – Doctorate

This changes every file in your project, though. Don't do this unless you want a massive commit even though nothing was really changed in the files (except for white space). – Compulsion

For mac use CTRL + OPT + O. – Independence

Answer 2

Easiest way is to enable Intellij -> Preferences -> Editor -> General -> Auto Import

Select Optimize imports on the fly; that will take care of removing unused imports on the fly

Sweetening

Thanks @Sweetening for the suggestion. In my case the project already had a lot of files with unused imports. This is a great suggestion, though, and would help others. Wow! its been so long since i asked this question. – Doctorate

Nice to know, its helpful – Sweetening