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https://issues.apache.org/jira/browse/NETBEANS-6349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17469686#comment-17469686
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Blocked commented on NETBEANS-6349:
-----------------------------------

[~taps] i downloaded  
[netbeans-12.5-bin.zip|https://archive.apache.org/dist/netbeans/netbeans/12.5/netbeans-12.5-bin.zip]
 (JAVA_HOME=JDK8) and i don't get any errors(just a little test).

With Netbeans 12.6 ,in netbeans.conf i changed to this: netbeans_jdkhome=JDK9, 
and i have the same errors like with JDK8.

what is the difference with installing Netbeans from .zip or from .exe ?

I want to help but i can only on 7-9 Jan. Give more detail about how i can find 
the problem. i will download nb 12.6 sources and build with ant my netbeans?

> Recent builds of the module responsible for java source parsing break BC to 
> JDK 8
> ---------------------------------------------------------------------------------
>
>                 Key: NETBEANS-6349
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-6349
>             Project: NetBeans
>          Issue Type: Bug
>          Components: editor - Parsing & Indexing
>    Affects Versions: 12.5, 12.6
>            Reporter: Thomas Schapitz
>            Assignee: Jaroslav Tulach
>            Priority: Critical
>
> There are 6 linked Issues, that all follow a common pattern, pointing to a 
> common cause:
>  * They are accompanied by an java.lang.NoSuchMethodError: 
> java.nio.CharBuffer.flip()Ljava/nio/CharBuffer;
>  * The users indicate, they are running NB 12.5+ with JDK8
>  * The errors occur during parsing.
> Sure enough, JDK 8 hasn't 
> java.nio.CharBuffer.flip()Ljava/nio/{*}+CharBuffer+{*},
> it has only java.nio.CharBuffer.flip()Ljava/nio/{+}*Buffer,*{+} which it 
> inherits from Buffer.
> Which means: the Module in question has obviously been compiled against a 
> library more recent then JDK8, at least JDK9, which has this method.
>  
> Consequences:
> This and the 6 linked issues will automatically be fixed with the rollout of 
> NB 13, which will require JDK 11 as prerequisite anyway.
> In the mean time, users may work around the problem, by immediately switching 
> to JDK 9+ when executing Netbeans. Note that they should still be able to 
> develop and build for JDKs 8 an prior.  



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