Can't use WildFly 11 with JDK 9 and Dynamic Web Module 4 -------------------------------------------------------- Key: JBIDE-25578 URL: https://issues.jboss.org/browse/JBIDE-25578 Project: Tools (JBoss Tools) Issue Type: Bug Components: server Affects Versions: 4.5.2.Final Reporter: Lukáš Valach Priority: Blocker Fix For: 4.5.2.Final WildFly 11 should support JDK 9 but it seems that DevStudio don't count with it. It is not possible to choose WF 11 as a runtime when Java 9 is choosen in project facets. Try this: * Install and run JBT or DevStudio against Java 9 * create Dynamic Web Project ** choose WF 11 as target runtime ** click Finish * right click on created project -> Properties -> Project Facets * note that it is configured to use Java 1.8, not Java 9 and you are not able to select Java 9. * open Targeted Runtimes tab * deselect WF 11 and click Apply * open Project Facets tab * now it is possible to choose Java 9, so do it, select Java 9 and click Apply * open Targeted Runtimes tab * Wildfly 11 isn't available, it is hidden. The same problem is with Dynamic Web Module 4, it is not possible to use it with WF 11.