[NETBEANS-5539] nb-javac "Compile on Save" causes "cannot find symbol" for types that are present

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 12.3
• Labels: nb-javac

Environment

Product Version: Apache NetBeans IDE 12.3

Java: 11.0.10; OpenJDK 64-Bit Server VM 11.0.10+9-Ubuntu-0ubuntu1.20.04

Runtime: OpenJDK Runtime Environment 11.0.10+9-Ubuntu-0ubuntu1.20.04

System: Linux version 5.4.0-70-generic running on amd64; UTF-8; de_DE (nb)

• Assignee: Unassigned
• Reporter: Torsten Römer
• Created: 03/Apr/21 21:09
• Updated: 05/Apr/21 23:50

Description

What I did:

1. Clean install of NetBeans 12.3
2. Installed nb-javac as recommended, restarted NetBeans
3. Cloned https://github.com/keycloak/keycloak.git (13.0.0-SNAPSHOT) from within NetBeans
4. Opened the parent project
5. Did "Clean and Build" of the whole project (success)
6. Expanded "Modules", all looks fine
7. Opened module "Keycloak REST Services": "Background scanning of projects..." takes a long time and there are constantly occurring "Unexpected Exception" (some NPE but it is impossible to select one because they are being replaced by a new occurrence all the time)
8. Opened the attached project "netbeans-test"

Expected behaviour:

• All projects open without error

Observed behaviour:

• When opening the module "Keycloak REST Services" is complete, there are several "cannot find symbol" errors for types that are actually present, for example DefaultVaultTranscriber in VaultTranscriberTest (see screenshot)
• In the project "netbeans-test", in NetBeansTest.java, the import org.keycloak.crypto.ES256SignatureProviderFactory as well has "cannot find symbol" and content-assist for the package org.keycloak.crypto only shows a subset of the types that actually are in the package

Workaround:

Disabling "Compile on Save", deleting the cache in ~/.cache/netbeans, rebuilding the project, restarting NetBeans etc. does not solve the issue.

"Uninstalling" nb-javac by deleting ~/.netbeans/12.3/modules and restarting NetBeans solves the problem, but then of course "Compile on Save" with all its advantages is not available any more.

Then nb-javac can be installed and "Compile on Save" enabled again - no errors show up (but might occur again later?)

Additional information:

In NetBeans 12.4 Beta 1 "Compile on Save" can be enabled and works without installing nb-javac: Compile on Save support for vanilla javac.

Issue Links

• is related to: NETBEANS-5292 nb-javac is source of several issues
• relates to: NETBEANS-5532 Project (Keycloak) does not load properly