Question

A university has the following dormitories:

• Allen Hall: $1,500 per semester
• Pike Hall: $1,600 per semester
• Farthing Hall: $1,200 per semester
• University Suites: $1,800 per semester

The university also offers the following meal plans:

• 7 meals per week: $560 per semester
• 14 meals per week: $1,095 per semester
• Unlimited meals: $1,500 per semester

Create an application with two combo boxes. One should hold the names of the dormitories, and the other should hold the meal plans. The user should select a dormitory and a meal plan, and the application should show the total charges for the semester. Answer with javaFX

Answer 1

// Java Program To Create A Dormitory And Meal Charges Calculator
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.collections.*;
import javafx.geometry.Pos;
import javafx.stage.Stage;
import javafx.scene.text.Text.*;
import javafx.scene.paint.*;
import javafx.scene.text.*;
public class combo_box_2 extends Application {

   // Launch the application
   public void start(Stage stage)
   {
       // Set title for the stage
       stage.setTitle("Dormitory And Meal Charges Calculator");
  
       // Dormitories
       String dormitories[] =
               { "Allen Hall", "Pike Hall", "Farthing Hall", "University Suites" };

       // Creating a combo box to show a list of dormitories
       ComboBox combo_box_dormitories =
                   new ComboBox(FXCollections
                           .observableArrayList(dormitories));
  
// Meal Plans
       String meal_plans[] =
               { "7 meals per week", "14 meals per week", "Unlimited meals" };

       // Creating a combo box to show a list of meal plans
       ComboBox combo_box_meal_plans =
                   new ComboBox(FXCollections
                           .observableArrayList(meal_plans));

       // Label to display the total charges for the semester
       Label total_charges_label = new Label("Total Charges = $0");

       // Creating action event to handle selection of different items in both lists
// and calculating charges according to the selections of the user
       EventHandler<ActionEvent> event = new EventHandler<ActionEvent>() {
           public void handle(ActionEvent e)
           {
int dormitory_charges = 0, meal_charges = 0, total_charges = 0;
  
//Calculating dormatory charges according to the current selection
if(combo_box_dormitories.getValue()=="Allen Hall")
{
dormitory_charges = 1500;
}
else if(combo_box_dormitories.getValue()=="Pike Hall")
{
dormitory_charges = 1600;
}
else if(combo_box_dormitories.getValue()=="Farthing Hall")
{
dormitory_charges = 1200;
}
else if(combo_box_dormitories.getValue()=="University Suites")
{
dormitory_charges = 1800;
}
  
//Calculating meal charges according to the current selection
if(combo_box_meal_plans.getValue()=="7 meals per week")
{
meal_charges = 560;
}
else if(combo_box_meal_plans.getValue()=="14 meals per week")
{
meal_charges = 1095;
}
else if(combo_box_meal_plans.getValue()=="Unlimited meals")
{
meal_charges = 1500;
}
  
//Calculating total charges as sum of both dormatory charges and meal charges
total_charges = dormitory_charges + meal_charges;
  
//Displaying total charges on the "total_charges" label
total_charges_label.setText("Total Charges = $" + Integer.toString(total_charges));
           }
       };

       // Setting on action
       combo_box_dormitories.setOnAction(event);
combo_box_meal_plans.setOnAction(event);

       // Creating a tile pane
       TilePane tile_pane = new TilePane(combo_box_dormitories, combo_box_meal_plans, total_charges_label);

       // Creating a scene
       Scene scene = new Scene(tile_pane, 350, 200);

       // Setting the scene
       stage.setScene(scene);
  
//Setting stage not to be resized
stage.setResizable(false);

       stage.show();
   }

   public static void main(String args[])
   {
       // Launch the application
       launch(args);
   }
}

Output