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I have a raspberry pi, and each time I require to run javafx code I use the following

sudo /opt/jdk1.8.0/bin/java -Djavafx.platform=eglfb -cp /opt/jdk1.8.0/jre/lib/jfxrt.jar:DigitalClock.jar digitalclock.DigitalClock

My question is, why do we need the digitalclock.DigitalClock at the end of the command?

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