# Java Wrapping broken?

**URL:** https://discourse.vtk.org/t/java-wrapping-broken/15083
**Category:** Support
**Created:** [December 28, 2024, 4:12pm UTC](https://discourse.vtk.org/t/java-wrapping-broken/15083 "2024-12-28T16:12:15Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![toddy](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/t/edb3f5/32.png) [@toddy](https://discourse.vtk.org/u/toddy)
#### Post date: [December 30, 2024, 11:25pm UTC](https://discourse.vtk.org/t/java-wrapping-broken/15083/4 "2024-12-30T23:25:54Z")

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What JDK version are you using? It must be at least 1.8

> [@VTK 9 and Java- vtk.jar not automatically generated. Also location of wrapper dlls](https://discourse.vtk.org/t/vtk-9-and-java-vtk-jar-not-automatically-generated-also-location-of-wrapper-dlls/3354/19):
>
> That should be cd $vtk\_build\_dir\Wrapping\Java dir /s/B \*.java \>javafiles javac -d ..\..\java @javafiles cd ..\..\java jar --create -f ..\lib\java\vtk.jar vtk\*.class then run cd $vtk\_build\_dir\Wrapping\Java\vtk\sample java -cp $vtk\_build\_dir\lib\java\vtk.jar Demo.java

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