java: package javafx.application does not exist code example

Example 1: 5:26 java: package javafx.application does not exist

sudo apt-get install openjdk-8-jre

Example 2: package javafx.fxml does not exist

sudo cp /usr/share/java/openjfx/lib/* /usr/lib/jvm/java-1.8.0-openjdk-amd64/lib