The Java launcher (in the Java 11 JDK) checks if your main class extends Application, and in that case it checks the module path and tries to find javafx.graphics module. If you have that module on the classpath, but not as a module, the launcher will exit with the message you see.
There are some workarounds (e.g. you can have a Main class that doesn't extend Application that calls your Application), but the best approach is go modular, as explained here: https://stackoverflow.com/questions/52467561/intellij-cant-recognize-javafx-11-with-openjdk-11/52470141#52470141 - Johan On Sat, Oct 13, 2018 at 6:29 PM Mark Raynsford <org.open...@io7m.com> wrote: > Hello! > > Now that Java 11 is at general availability, I decided to give OpenJFX > 11 a shot today. Unfortunately, I encountered the above error with an > extremely trivial example project: > > Error: JavaFX runtime components are missing, and are required to run > this application > > The Maven project setup I'm using is here: > > https://github.com/io7m/javafxhello > > $ java -version > openjdk version "11" 2018-09-25 > OpenJDK Runtime Environment 18.9 (build 11+28) > OpenJDK 64-Bit Server VM 18.9 (build 11+28, mixed mode) > > $ mvn --version > Apache Maven 3.5.4 (NON-CANONICAL_2018-09-08T01:02:16+02:00_root; > 2018-09-08T00:02:16+01:00) Maven home: /opt/maven > Java version: 11, vendor: Oracle Corporation, > runtime: /usr/lib/jvm/jdk-11 Default locale: en_GB, platform encoding: > UTF-8 OS name: "linux", version: "4.18.12-arch1-1-arch", arch: "amd64", > family: "unix" > > If I try to run the program from the IDE (Intellij), the exact command > line used is: > > $ /usr/lib/jvm/jdk-11/bin/java > -javaagent:/usr/share/idea/lib/idea_rt.jar=34729:/usr/share/idea/bin \ > -Dfile.encoding=UTF-8 \ > -classpath > /home/rm/doc/dev/2018/10/javafxhello/target/classes:/home/rm/var/maven/org/openjfx/javafx-controls/11/javafx-controls-11.jar:/home/rm/var/maven/org/openjfx/javafx-controls/11/javafx-controls-11-linux.jar:/home/rm/var/maven/org/openjfx/javafx-graphics/11/javafx-graphics-11.jar:/home/rm/var/maven/org/openjfx/javafx-graphics/11/javafx-graphics-11-linux.jar:/home/rm/var/maven/org/openjfx/javafx-base/11/javafx-base-11.jar:/home/rm/var/maven/org/openjfx/javafx-base/11/javafx-base-11-linux.jar > com.io7m.javafxhello.Main > > Am I doing something wrong? I feel like I've set things up the same way > as shown in the documentation. > > -- > Mark Raynsford | http://www.io7m.com > >
