Post the fix to JMC-6128, JOverflowUi from Eclipse (running with JDK 9 or its below) will fail to load OpenJFX class with exception

"java.lan.UnsupportedClassVersionError: javafx/application/Platform has been compiled by a more recent version of the Java Runtime (class file version 54.0), ...). 

In Order to fix this solution we need to provide our

1. If the boot JDK contains (JDK 9 and its below) jfxrt.jar , then done use OpenJFX classes.
2. Provide org.openjdk.jmc.osgi.extension as part of update sites IDE (with fragment and its autostart specified).