Why can't I rename package in intellij idea?

Question

Why can't I change package name in intellij idea?

I want to change "java" package to something else, for example "junit" or "jtests":

But when I select Refactor -> Rename I wind up with the dialog window:

then I select Rename current, in the next window I enter desired package name:

and then, no matters whether I click Refactor or Preview button, nothing happens. Nothing at all: no errors, no warnings, no actions. Why can't I rename this package?

Answer 1

For me it was due to memory problem, after increasing memory (heap size) it solved.

Answer 2

Only folders under java are part of the package qualified name.

Example: If you have a file in a folder located under app/src/main/java/com/my/package then the package will be com.my.package

So, you only want to change folders under java.

However, regarding the "com" folder, the IDE does not provide an option to refactor package name. In this case, you need to manually rename all code occurrences of the old folder and invalidate the cache after renaming the folder.

File > Invalidate caches... > Clear system

Answer 3

Just a bug in intellij. Invalidate the caches and restart. Here's how, it's easy.

Answer 4

For me invalidation didn't work. I made a new package and temporarily moved the classes out of the package I wanted to rename. It would disapear when I would rename them, so I would create them again.

Answer 5

It seems to be a bug of IntelliJ IDEA. I found the solution on JetBrains forum. By invalidating the cache and restarting, I got the ability to rename this package.