title: OpenJDK 8 with JavaFX
body: <p>I have installed OpenJDK 8 and want to create a JavaFX app. Since JavaFX is not included in OpenJDK 8, I tried to install OpenJFX via maven:
  downloaded <code>org.openjfx:javafx-controls:11</code> and <code>org.openjfx:javafx-fxml:11</code>. It seems fine, the libs are resolved.
  But when I execute the program, I get the following error message:</p>
  <pre><code>    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.
  </code></pre>
  <p>So I think I have the wrong version of the libs, since Java 8 is class file version 52. Is there a OpenJFX lib available for Java 8. Or did I miss something else?</p>