I think Fiji has recently been built with OpenJDK(adoptOpenJDK), but it does not contain JavaFX.
Some of my plugins use JavaFX, so I tried to install JavaFX(11) and start one of them.
Then, an error message popped up.
java.lang.UnsupportedClassVersionError: javafx/embed/swing/JFXPanel has been compiled by a more recent version of the Java Runtime (class file version 54.0), this version of the Java Runtime only recognizes class file versions up to 52.0
The meaning of this message seems to appear if the versions of java used to build Fiji and JavaFX are different.
OracleJDK8 contains JavaFX, but OpenJDK does not contain it.
And I can not find JavaFX built with Java8.
Is there any way to work it?