NetBeans 12.0 LTS - Hibernate Plugin require Freemarker Integration implementation version 238

Question

In Apache NetBeans 12.0 LTS

When I'm trying to install Hibernate plugin it says :

Some plugins require plugin Freemarker Integration to be installed

The plugin Freemarker Integration is requested in implementation version 238.
The following plugin is affected:

Hibernate

But there's on Apache NetBeans Plugin Portal Freemarker plugin is not available.

I tried installing Freemarker plugin from old plugin portal of NetBeans

FreeMarker support for NetBeans

but getting same error.

I'm using:

Debain 10.4 Buster LXQt AMD 64-bits  
openjdk 11.0.7 2020-04-14 LTS
Apache NetBeans 12.0 LTS  

I've also created issue there at Apache's JIRA issue tracker
No dependent plugins are available at Apache NetBeans plugin portal for Hibernate

But I think they will not pay attention.

Answer 1

This causes because there is a conflict for the version of freemarker, netbeans is looking for freemarker.jar with OpenIDE-Module-Implementation-Version: 238, but in my case the OpenIDE-Module-Implementation-Version: was 239 and that was causing the issue.

You can fix this by

1. Close your running netbeans application
2. Download freemarker.jar with OpenIDE-Module-Implementation-Version: 238 org-netbeans-libs-freemarker-RELEASE81.jar and rename the downloaded library to org-netbeans-libs-freemarker.jar
3. Navigate to ide/modules subfolder in apache netbeans installation directory
4. You will find the freemarker library org-netbeans-libs-freemarker.jar, replace this with your downloaded library.
5. Restart the netbeans(or perhaps restarting the computer should work) and you should be able to download the hibernate plugin

ps- you can check the OpenIDE-Module-Implementation-Version by opening the jar library as an archive and inside the META-INF/MANIFEST.MF file

Also refer this for more information

Answer 2

This is the way.

1. unistall netbeans.

2. install netbeans (but not started it yet)

3. Open: "netbeans-12.0/netbeans/ide/modules/org-netbeans-libs- freemarker.jar" with an arquive manager and go to META-INF/MANIFEST.MF

4. change the value 239 for 238 in lines. To be like this:

   OpenIDE-Module-Implementation-Version: 238
   OpenIDE-Module-Specification-Version: 2.42.0.238

5. close and update you change.

6. start the netbeans for the fist time and all will go well.