Question

Problem 2) Convert Kilometers to Miles Write a JavaFX program using JavaFX Menu for to solve the following problem about converting between Kilometers to Miles. Sample Run is shown below You are asked to implement only the menu item under Formulas which reads as"KM to Mile". Choosing this menu item will display the following input box: Input Enter Kilometers Value OK Cancel The result will be displayed in a TextArea as shown below: JavaF× Menu Example " File Formulas 10.0 Kiloneters is equal to 6.241 Miles

java programming

Answer 1

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextInputDialog;
import java.util.Optional;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class MenuApp extends Application {

public static void main(String[] args) {
launch(args);
}

@Override
public void start(Stage stage) {
stage.setTitle("JavaFX Menu Example");
//adding submenus to menu. Adding menu to menubar
Menu menu1 = new Menu("File");
Menu menu2=new Menu("Formulas");
MenuItem menuItem1 = new MenuItem("KM to Mile");
menu2.getItems().add(menuItem1);
MenuBar menuBar = new MenuBar();
menuBar.getMenus().add(menu1);
menuBar.getMenus().add(menu2);
TextArea result = new TextArea();
VBox vBox = new VBox();
vBox.getChildren().add(menuBar);
vBox.getChildren().add(result);
//performing action when clicking on menu item
menuItem1.setOnAction(e -> {
TextInputDialog input = new TextInputDialog();
input.setTitle("Input");
input.setContentText("Enter Kilometers Value");
// get the response value.
Optional<String> value = input.showAndWait();
if (value.isPresent()){
result.setText(String.format("%.1f Kilometers is equal to %f Miles",Double.parseDouble(value.get()),Double.parseDouble(value.get())*0.621371));
}
});
Scene scene = new Scene(vBox, 960, 200);
stage.setScene(scene);
stage.show();

}
}

Output