Question

Use Kilometer Converter application code to write Temperature Converter application to convert degrees Fahrenheit into degrees Celsius ((F - 32)*5/9). It needs to be JavaFX

1 import javafx.application. Application; 2 import javafx.stage. Stage; 3 import javafx.scene. Scene; 4 import javafx.scene.layout.HBox; 5 import javafx.scene.layout. VBox; 6 import javafx.geometry.Pos; 7 import javafx.geometry.Insets; 8 import javafx.scene.control.Label; 9 import javafx.scene.control. TextField; 10 import javafx.scene.control.Button; 11 import javafx.event. EventHandler; 12 import javafx.event. ActionEvent; 13 14 ** 15 * Kilometer Converter application 16 17 18 public class KiloConverter extends Application 19 { 20 // Fields 21 private TextField kiloTextField; 22 private Label resultLabel; 23 24 public static void main(String[] args)

Answer 1

import javafx.applications.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.geometry.Pos;
import javafx.geometry.Insets;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.control.Button;
import javafx.event.EventHandler;
import javafx.event.ActionEvent;

/**
 * Temperature Converter application
 */

public class TemperatureConverter extends Application
{
    // Fields
    private TextField farenheitTextField;
    private Label resultLabel;
    
    public static void main(String []args)
    {
        // Launch the application.
        launch(args);
    }

    @Override
    public void start(Stage primaryStage)
    {
        // Create a Label to display a prompt.
        Label promptLabel = new Label("Enter a temperature in farenheit:");

        // Creeate a TextField for input.
        farenheitTextField = new TextField();
        
        // Create a Button to perform the conversion.
        Button calcButtton = new Button("Convert");
        
        // Register the event handler.
        calcButtton.setOnAction(new CalcButtonHandler());
        
        // Create an empty Label to display the result.
        resultLabel = new Label();
        
        // Put the promptLabel and the farenheitTextField in an HBox.
        Hbox hbox = new HBox(10, promptLabel, farenheitTextField);
        
        // Put the HBox, calcButton and the resultLabel in a VBox.
        Vbox vbox = new VBox(10, hbox, calcButton, resultLabel);
        
        // Set the VBOX's alignment to center.
        vbox.setAlignment(Pos.CENTER);
        
        // Set the VBox's padding to 10 pixels.
        vbox.setPadding(new Insets(10));
        
        // Create a Scene.
        Scene scene = new Scene(vbox);
        
        // Add the Scene to the Stage.
        primaryStage.setScene(scene);
        
        // Set the stage title.
        primaryStage.setTitle("Kilo ");
        
        // Show the window.
        primaryStage.show();
    }

    /*
    * Event handler class for calcButton
    */

    class CalcButtonHandler implements EventHandler<ActionEvent>
    {
        @Override
        public void handle(ActionEvent event)
        {
            // Get the Fahrenheit.
            double fahrenheit = Double.parseDouble(farenheitTextField.getText());

            // Conver the fahrenheit to celsius.
            double celsius = ((fahrenheit - 32) * 5 / 9);
 
            // Display the results.
            resultLabel.setText(String.format("%,.2f celsius", celsius));
        }
    }
}