Question

You will be asked to implement a JavaFX program to demonstrate skills and knowledge covering the following:

• implementing EventHandlers and ChangeListeners for UI controls incl. ListViews

• JFoenix

Just need some examples in Java

Answer 1

Exception Handling Java

public class JavaExceptionExample{  

public static void main(String args[]){  

try{

int data=100/0;  

}

catch(ArithmeticException e){System.out.println(e);

System.out.println("rest of the code...");  

}  

1. }  

Implementing change listener in Javafx

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.AbstractButton;

import javax.swing.ButtonModel;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.event.ChangeEvent;

import javax.swing.event.ChangeListener;

public class StateListener {

    public static void main(String args[]) {

  JFrame jFrame = new JFrame("");

  jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

  JButton button = new JButton("Press Me");

  ActionListener actionListner = new ActionListener() {

@Override

public void actionPerformed(ActionEvent event) {

    AbstractButton absButton = (AbstractButton) event.getSource();

    boolean selected = absButton.getModel().isSelected();

    System.out.println("Selected=" + selected + "n");

}

  };

  ChangeListener changeListner = new ChangeListener() {

@Override

public void stateChanged(ChangeEvent event) {

    AbstractButton aButton = (AbstractButton) event.getSource();

    ButtonModel aModel = aButton.getModel();

    boolean armed = aModel.isArmed();

    boolean pressed = aModel.isPressed();

    boolean selected = aModel.isSelected();

    System.out.println("Armed :" + armed + " - Pressed :" + pressed + " - Selected :" + selected);

}

  };

  button.addActionListener(actionListner);

  button.addChangeListener(changeListner);

  Container cPane = jFrame.getContentPane();

  cPane.add(button, BorderLayout.CENTER);

  jFrame.setSize(800, 500);

  jFrame.setVisible(true);

    }

}

Implementing JFoenix

public void start(final Stage stage) throws Exception {

    StackPane pane = new StackPane();

    JFXSpinner root = new JFXSpinner();

    pane.getChildren().add(root);

    final Scene scene = new Scene(pane, 300, 300);
    scene.getStylesheets().add(MainDemo.class.getResource("/css/jfoenix-components.css").toExternalForm());
    stage.setScene(scene);
    stage.setTitle("JFX Spinner Demo");
    stage.show();
}