How do you change java version using SDKMAN without needing to close Intellij IDEA first?

Question

I have sdkman installed on my PC laptop. I work on two separate projects, where P1 uses Java 11 and P2 uses Java 8. If I am working on P1, but something comes up and I need to work on P2, I will open up P2 using my ide (IntelliJ IDEA). Since P2 uses Java 8, I will open a terminal and use sdkman to change my pc to use Java 8. However, when I attempt this, I get 2 error messages:

user1@ bin $ sdk default java 8.322.06.2-amzn

rm: cannot remove '/c/Users/user1/.sdkman/candidates/java/current/lib/jrt-fs.jar': 
Device or resource busy

ln: failed to create symbolic link 
'/c/Users/user1/.sdkman/candidates/java/current/8.322.06.2-amzn': No such file or 
directory

When I look in the "current/" directory, instead of it being populated with the Java 8 JDK, it looks like "lib/jrt-fs.jar" (left over from the previous Java 11 JDK content) has not been deleted, and is in fact still residing in "current/". If I attempt to delete "lib/" via the file system, it tells me that the folder cannot be deleted, as a program is using it. I think there is a file handle not released by the ide, because when I close the ide, I can delete the folder, and I can use sdkman to populate the "current/" folder again.

Question: Is there a way to release the ide file handle on contents in the "current/" folder, without closing the ide?

Caveat: When I googled "Device or resource busy" I saw mentioned that I could use the umount command somehow, but I am not sure if this is a false trail or if I just need more information: here

Note: I am using the Community Edition of IntelliJ IDEA, version 2022.3.2

Edit: Here is a snapshot of the Project Settings that shows picking the JDK from the file system.

Answer 1

After some additional effort to figure this out, it turned out to be an easy fix. SDKman stores the JDKs in this folder:

C:\Users\yourUserName\.sdkman\candidates\java

When you issue the command

sdk default java 8.322.06.2-amzn

it copies the JDK from the java 8 folder

C:\Users\yourUserName\.sdkman\candidates\java\8.322.06.2-amzn

and pastes it into the current folder.

C:\Users\yourUserName\.sdkman\candidates\java\current

The idea is that you point your pc to the "current/" directory so that when you change java version with SDKman, the pc environment variable never needs to be updated.

But for the ide, instead of pointing it to the "current/" directory, you can point it directly to the JDK folder

C:\Users\yourUserName\.sdkman\candidates\java\8.322.06.2-amzn

You can specify the JDK for each project, P1 and P2, separately. So even if you change java version with SDKman, that only effects the "current/" directory, which the ides are no longer pointing at.

Since I did this, I dont have to change java version if I want to switch working on my java 8 project to working on my java 11 project. And that means I dont have to close my java 8 project to open my java 11 project. I can have them both open at the same time, and switch between them easily.