B4J Question [B4X] [XUI] xCustomListView V1.68+

[XbNnX_507]

After updating xCustomListView internal Library to 1.68 i got this error:

java.lang.UnsupportedClassVersionError: b4j/example/customlistview has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0

My jdk is jdk1.8.0_202. 32 bits.

Maybe xCustomListView was compiled with java 9+?
Any chance could be recompiled with java 8?

This error happens when i use [XUI] Views too: https://www.b4x.com/android/forum/t...ss-platform-views-and-dialogs.100836/#content

thanks.

 

[XbNnX_507]

For those with the same problem.

Attached xCustomListView compile with jdk1.8

 

[mangojack]

I had same error when running XUI B4X Table example last week ,and in attempt to fix updated to Java 11.

Only to discover I had old versions of jFX and XUI Libs . Updating libs and returning to java 8 solved problem.

 

[Erel]

I had same error when running XUI B4X Table example last week ,and in attempt to fix updated to Java 11.

Only to discover I had old versions of jFX and XUI Libs . Updating libs and returning to java 8 solved problem.

It should be simple to upgrade to Java 11. Make sure to use the latest version of B4J.

I've uploaded xCustomListView compiled with Java 8: https://www.b4x.com/android/forum/threads/updates-to-internal-libaries.48274/#post-643619

 

[mangojack]

I was running latest B4J version .. but somehow had really old versions of jFX and XUI libs in Core libs folder ?? which did not help situation.
I will retry Java update when I return from short camping trip.

 

[Erel]

but somehow had really old versions of jFX and XUI libs in Core libs folder ??

Delete all libraries from the internal libraries folder and reinstall B4J.

 

[mangojack]

Already done and all is good ... Thanks

 

[rboeck]

Yesterday i had the same effect - i tried to use an jar file at customers place and got the error message: java.lang.UnsupportedClassVersionError. So i switched back to java8. Is it true, that all customers have to go to java11, before we change?

 

[Erel]

Is it true, that all customers have to go to java11, before we change?

No.