Generally Java 17 works for running GWT but source level still needs to be 11 for GWT client/shared code as GWT only supports compiling Java 11 source files. Server code can be anything. If you use GWT-RPC you might need to add some --add-opens to your server JVM: https://github.com/gwtproject/gwt/pull/9791
-- J. Victor Colina schrieb am Freitag, 8. Dezember 2023 um 14:55:58 UTC+1: > Thanks for the response, If I change to GWT 2.9 I can still use jdk 17? Or > I have to go lower? > > On Friday, December 8, 2023 at 9:05:37 AM UTC-4 Frank Hossfeld wrote: > >> Assuming you are using GWT 2.10.0, GXT expects a few things, (f.e.: >> user-agent ie8) which have been removed in GWT 2.10.0. >> You have to stay with GWT 2.9.0. (see: >> https://docs.sencha.com/gxt/4.x/guides/announcements/Announcements.html) >> >> Victor Colina schrieb am Donnerstag, 7. Dezember 2023 um 17:48:29 UTC+1: >> >>> I'm trying to compile a simple GWT project with GXT 4. The compilation >>> works unitl I add the gxt. >>> >>> [image: imagen_2023-12-07_124453814.png] >>> >>> >>> >>> This is my gwt.xml file. >>> >>> [image: imagen_2023-12-07_124712961.png] >>> >>> If anybody can help me, thanks in advance. >>> >> -- You received this message because you are subscribed to the Google Groups "GWT Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit/931c6599-28d0-4586-9ad0-d499c6e22114n%40googlegroups.com.