Extra Credit 01

Objectives

The student, largely through self-study, will develop an application that calculates grades for CSCE145 using JavaFX.

Not sure where to begin?

Try to do the first two tutorials on Oracle’s site: https://docs.oracle.com/javafx/2/get_started/jfxpub-get_started.htm

Rules

1. It must be mostly correct to garner any credit – showing a graphical user interface GUI like the ones below is 50%, the rest is actually calculating the average and displaying it.

2. It will not be graded if it does not compile or show a GUI.

3. We’re not going to worry about making sure the inputs are valid for this lab.

4. Your interface doesn’t have to be exactly the same.

Notes and Suggestions

· Dr. Java works for this. Eclipse can work, but may require additional work.

· The second tutorial will be quite helpful for this. It has almost all the pieces you need.

· Name your TextFields descriptively.

· getText() on a TextField will give you the text in the text field as a String. There is a setText() for other controls.

· Subtle but important point: GUIs almost always run in a very different manner than regular command line programs. They are event-driven.

o In the code for the button in the HelloWorld example:

Button btn = new Button();

btn.setText("Say 'Hello World'");

btn.setOnAction(new EventHandler<ActionEvent>() {

@Override

public void handle(ActionEvent event) {

System.out.println("Hello World!");

}

});

§ The setOnAction() method takes an event handler.

§ The event handler has a method which is what actually does ( “handles”) the event of the button being clicked.

§ https://docs.oracle.com/javafx/2/events/convenience_methods.htm for more information.

· Mine looks like: