I\'m trying to run some JavaFX code with Eclipse Kepler, with e(fx)clipse plugin installed, on a Linux machine, using:
java version \"1.7.0_21\" OpenJDK Runt
Mine were located here on Ubuntu 18.04 when I installed JavaFX using apt install openjfx (as noted already by @jewelsea above)
apt install openjfx
/usr/share/java/openjfx/jre/lib/ext/jfxrt.jar /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/jfxrt.jar