JavaFX cass file wrong version

Question

I have problem with JavaFX. My jdk version is OpenJDK version "1.8.0_222" and javac 1.8.0_222. When i start JavaFX app i have this error .

Error:(3, 26) java: cannot access javafx.application.Application
  bad class file: /usr/share/openjfx/lib/javafx.graphics.jar!/javafx/application/Application.class
    class file has wrong version 54.0, should be 52.0
    Please remove or make sure it appears in the correct subdirectory of the classpath.

Somewhere you've compiled with Java 12 but you're running with Java 8. Do you have another environment on you machine? JavaFX 13 requires Java 11 so you'll not be able to use Java 8 either way. — stdunbar, Commented Nov 24, 2019 at 18:38
I have only installed Java 8. What i can do i will use another GUI framework? I must have Java 8. — Dawid, Commented Nov 24, 2019 at 18:49

acostas · Accepted Answer · 2019-11-24 18:59:18Z

0

you are using a jdk version not compatible with your openjfx version. You can update the openjdk version at least to version 10 or check you are using openjfx version 8 at most.

answered Nov 24, 2019 at 18:59

acostas

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