WG: Minimal reproduction example for JDK-8217953 NPE in TableCellSkin

Peter, Benjamin B.Peter at gsi.de
Thu Feb 13 14:02:04 UTC 2020

Hello devs,

same example but with the file as attachment and without header.



-----Ursprüngliche Nachricht-----
Von: openjfx-dev <openjfx-dev-bounces at openjdk.java.net> Im Auftrag von Peter, Benjamin
Gesendet: Donnerstag, 13. Februar 2020 11:54
An: openjfx-dev at openjdk.java.net
Betreff: Minimal reproduction example for JDK-8217953 NPE in TableCellSkin

Dear FX devs,

please accept my minimal reproduction example for JDK-8217953 "NullPointerException when TableCellSkin gets disposed twice"

In the report it says there was no luck reproducing it - I hope this could now be beneficial for a solution to this problem.

I could repeatedly trigger the problem after 100 of my update cycles - which interestingly corresponds to the following constant which can be found along the stacktrace. 
javafx.scene.control.skin.TableRowSkinBase.DEFAULT_FULL_REFRESH_COUNTER = 100 Surely - could be coincidence - but also a hot lead.

I can also confirm it is still reproducable in jfx 11 and 13.

It is available as public domain gist on github:


Thank you for your work and cooperation,

with kind regards,

Benjamin Peter

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