(Its an app) (Miles-per-Gallon Calculator App) In JAVA with comments

Open Netbeans IDE

Go to file > New project > JAVAFX > JAVAFX > FXML Application

Set required properties for the project

open.fxml in JavaFX Screen Builder

Place AnchorPane in design and set its attributes

Place mileTextField, gallonsTextField and calcButton on the AnchorPane and set their attributes

Place label that will show the calculated value and set its attributes

Set the controller function on the left side of JavaFX screen Builder and asign TextFields, label, and button with their respective fx:id's

Drivers often want to know the miles per gallon their cars get so they can estimate gasoline costs. Develop an app that allows the user to input the number of miles driven and the number of gallons used and calculates and displays the corresponding miles per gallon.