Merci pour ces réponces,
effectivement, j'ai l'impression qu'il m'en manque
# rpm -qa java*
java-1.8.0-openjdk-headless-1.8.0.181-7.b13.fc28.x86_64
javapackages-tools-5.0.0-14.fc28.noarch
du coup j'ai tapé
dnf install java
maintenant j'ai ça
# rpm -qa java*
java-11-openjdk-headless-11.0.ea.22-1.fc28.x86_64
java-11-openjdk-11.0.ea.22-1.fc28.x86_64
java-1.8.0-openjdk-headless-1.8.0.181-7.b13.fc28.x86_64
javapackages-tools-5.0.0-14.fc28.noarch
toujours pas de -devel
j'essaye d'insaller de nouveau avec
# java -jar editor-min.jar
08:13:16.095 [AWT-EventQueue-0] ERROR rpgboss.editor.RpgDesktop$ - Uncaught exception
java.awt.HeadlessException
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:204)
at java.awt.Window.init(Window.java:484)
at java.awt.Window.<init>(Window.java:436)
at java.awt.Frame.<init>(Frame.java:446)
at java.awt.Frame.<init>(Frame.java:404)
at javax.swing.JFrame.<init>(JFrame.java:213)
at scala.swing.Frame$$anon$1.<init>(RichWindow.scala:76)
at scala.swing.Frame.peer$lzycompute(RichWindow.scala:76)
at scala.swing.Frame.peer(RichWindow.scala:76)
at scala.swing.Frame.peer(RichWindow.scala:75)
at scala.swing.UIElement$.scala$swing$UIElement$$cache(UIElement.scala:20)
at scala.swing.UIElement$class.$init$(UIElement.scala:78)
at scala.swing.Window.<init>(Window.scala:22)
at scala.swing.Frame.<init>(RichWindow.scala:75)
at scala.swing.MainFrame.<init>(MainFrame.scala:15)
at rpgboss.editor.RpgDesktop$$anon$1.<init>(RpgDesktop.scala:16)
at rpgboss.editor.RpgDesktop$.top(RpgDesktop.scala:16)
at rpgboss.editor.RpgDesktop$.startup(RpgDesktop.scala:60)
at scala.swing.SwingApplication$$anonfun$main$1.apply$mcV$sp(SwingApplication.scala:7)
at scala.swing.Swing$$anon$10.run(Swing.scala:34)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
comment faire pour installer les parties manquantes de java ?