leolegenie opened a new issue, #5934:
URL: https://github.com/apache/netbeans/issues/5934
### Apache NetBeans version
Apache NetBeans 17
### What happened
Hello
This is an issue that I have experienced in all Netbeans Versions since ~12
but has gotten better with 17, still, it appears from time to time. So:
From time to time, in some of my Maven projects, it happens that Unit Tests
do not find a class in the same package anymore. They show up marked as "red"
and lines using them show up as "red" saying "missing symbol" and when running
them via the IDE with the individual-file context menu fail with errors such as:
```
java.lang.RuntimeException
Uncompilable code - cannot find symbol
symbol: variable MyClass
location: class com.xyz.MyClassTest
at com.xyz.MyClassTest.test(MyClassTest.java:1)
```
Where MyClass is in the same package as the MyClassTest (com.xyz).
When I run the same test via the more high-level "maven clean build"
commands all works fine (in the IDE and also from the command line).
Change the Java Version does not help. Recompiling does not help. Restarting
the IDE does not help. Change Maven Version or bundled vs external does not
help.
The only thing to make this go away is go to the cache directory and remove
the index directory (shutting down the IDE first and then starting again). Once
I do this, it usually stays fine for a few days or weeks, and then randomly
appears again. Also, it does not appear for all classes for that package or
project, it is really quite random.
Any idea how to fix this? I'm also happy to enable debugging/logging and
help reproduce this.
If it can't be fixed (soon), as a workaround, would it be possible to
introduce a feature to purge/clean/rebuild the cache/index directory from
inside of the IDE for specific classes/packages/projects?
Thanks, regards, Leo
### How to reproduce
I cannot hard-reproduce the problem.
I believe it happens more often the more "load" is on the IDE. So, if I only
have one or two projects open in the IDE and they are not big the probability
for this to happen is low.
But if I have more projects (say, 10-15 each with 100K lines of code) open
and work on one of them, then it happens more frequently (say, once or twice
per week).
Also to add, when I do a git checkout/switch from "underneath" the IDE via
the command line I have the impression that the likelyhood for this to happen
is increased - but I have also seen it happen just out of the blue by editing a
class from the IDE.
Also, I think this was worse in previous versions of the IDE, it improved
with Netbeans 17.
### Did this work correctly in an earlier version?
Apache NetBeans 12.6 or earlier
### Operating System
Windows 10
### JDK
8, 11, 17
### Apache NetBeans packaging
Apache NetBeans binary zip
### Anything else
_No response_
### Are you willing to submit a pull request?
Yes
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