For this assignment you are going to program a JavaFX tip calculator app like yo

Question

For this assignment you are going to program a JavaFX tip calculator app like you might find on your phone. The interface is shown below.

To use the app the user types in the check amount and the tip percent. Note that all text is right-justified. The user should be able to enter the tip percent as either a decimal (.18) or whole number (18). Your program should take care of converting the whole number to a decimal for calculating the tip amount. The user can elect to split the total by up to 5 people by making a selection from the Split choice box. The default value of the Split choice box should be set to “1 way”.

The tip amount and total are calculated when the user presses the Calculate Tip button.

The user should not be allowed to edit or change the tip amount, the total and the amount per person.

Two versions with different splits are shown below

Make sure this is in JavaFX!

Explanation / Answer

I did not done the split operation.

package tipcalculator2;

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;

/**
*
* @author ryan
* JavaFX Tax Calculator Form Layout
* and Basic JavaFX Button Event Handler
*/
public class TipCalculator2 extends Application {
double p,total,tamount,per;
@Override
public void start(Stage primaryStage) {
primaryStage.setTitle("JavaFX Tax Calculator");
GridPane pane = new GridPane();
pane.setAlignment(Pos.CENTER);
pane.setHgap(10);
pane.setVgap(10);
pane.setPadding(new Insets(25, 25, 25, 25));
Scene scene = new Scene(pane, 350, 440);

Text sceneTitle = new Text("Tip Calculator");
sceneTitle.setFont(Font.font("Arial", FontWeight.NORMAL,20));
pane.add(sceneTitle, 0, 0, 2, 1);
Label cAmountL= new Label("Check Amount:");
pane.add(cAmountL, 0, 1);
final TextField cAmountF = new TextField();
cAmountF.setAlignment(Pos.BASELINE_RIGHT);
pane.add(cAmountF, 1, 1);
Label tPercentL = new Label("Tip Percent %:");
pane.add(tPercentL,0,2);
final TextField tPercentF = new TextField();
tPercentF.setAlignment(Pos.BASELINE_RIGHT);
pane.add(tPercentF, 1, 2);

// combobox
Label SplitL = new Label("split");
pane.add(SplitL,0,3);
final ComboBox split = new ComboBox();
split.getItems().addAll(
"1 way",
"2 way",
"3 way"
);   
split.setValue("1 way");
pane.add(split,1,3);
//button
Button calculateButton = new Button("Calculate");
HBox hbox = new HBox(10);
hbox.setAlignment(Pos.BOTTOM_RIGHT);
hbox.getChildren().add(calculateButton);
pane.add(hbox, 1, 4);
//lower fields
Label tAmountL= new Label("Tip Amount:");
pane.add(tAmountL, 0, 5);
final TextField tAmountF = new TextField();
tAmountF.setAlignment(Pos.BASELINE_RIGHT);
pane.add(tAmountF, 1, 5);
Label TotalL = new Label("Total:");
pane.add(TotalL,0,6);
final TextField TotalF = new TextField();
TotalF.setAlignment(Pos.BASELINE_RIGHT);
pane.add(TotalF, 1, 6);
  
Label PersonL = new Label("Amount Per Person:");
pane.add(PersonL,0,7);
final TextField PersonF = new TextField();
PersonF.setAlignment(Pos.BASELINE_RIGHT);
pane.add(PersonF, 1, 7);
  
  
calculateButton.setOnAction(new EventHandler<ActionEvent>() {

@Override
public void handle(ActionEvent t) {
//int amount;
  
tamount=(((Double.parseDouble(cAmountF.getText()))*(Double.parseDouble(tPercentF.getText())))/100);
tAmountF.setText("$ "+Double.toString(tamount));
total=Double.parseDouble(cAmountF.getText())+tamount;
TotalF.setText("$"+Double.toString(total));
  
  
}
});

primaryStage.setScene(scene);
primaryStage.show();
}

/**
* The main() method is ignored in correctly deployed JavaFX application.
* main() serves only as fallback in case the application can not be
* launched through deployment artifacts, e.g., in IDEs with limited FX
* support. NetBeans ignores main().
*
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}

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