Question

Hello I need help with the following, I already have some of the code done below

Create an application that demonstrates how binary numbers are related to decimal numbers. The user should be able to enter the individual digits of a binary number in separate controls (your choice). There should be between 4 and 8 binary digits available for the user to set. When designing your application, use controls so that it is not possible for the user to enter an incorrect number. You may want to consider using combo boxes or radio buttons or checkboxes, etc. In particular, using a TextField and error checking is insufficient for this application. Whenever a digit is changed, the display of the corresponding decimal number should change automatically.

//CODE

import javafx.application.*;

import javafx.stage.*;

import javafx.stage.FileChooser.*;

import javafx.scene.*;

import javafx.scene.control.*;

import javafx.scene.control.Alert.*;

import javafx.scene.input.*;

import javafx.scene.layout.*;

import javafx.scene.canvas.*;

import javafx.scene.paint.*;

import javafx.scene.effect.*;

import javafx.scene.shape.*;

import javafx.scene.text.*;

import javafx.event.*;

import javafx.animation.*;

import javafx.geometry.*;

import java.util.*;

import javafx.beans.value.*;

public class DESMethod extends Application

{

public static void main(String[] args)

{

try

{

launch(args);

}

catch (Exception e)

{

e.printStackTrace();

}

finally

{

System.exit(0);

}

}

public void start(Stage mainStage)

{

mainStage.setTitle("Binary Numbers to Decimals!");

  

BorderPane root = new BorderPane();

  

// make text bigger

root.setStyle( "-fx-font-size: 20;" );

  

// Create and set up the Menu Bar.

MenuBar bar = new MenuBar();

root.setTop(bar);

  

// Create the File and About Menus, and add them to the MenuBar.

Menu fileMenu = new Menu("File");

Menu aboutMenu = new Menu("About");

bar.getMenus().addAll(fileMenu, aboutMenu);

  

// Create the MenuItems for the File and About Menus.

MenuItem quit = new MenuItem("Quit");

MenuItem info = new MenuItem("Credits and Description");

  

// Add the MenuItems to their respective sub menus.

fileMenu.getItems().addAll(quit);

aboutMenu.getItems().addAll(info);

  

VBox centerBox = new VBox();

centerBox.setPadding(new Insets(16));

centerBox.setSpacing(8);

  

root.setCenter(centerBox);

  

Scene mainScene = new Scene(root);

mainStage.setScene(mainScene);

  

// The following line loads a stylesheet file; incorrect syntax will generate a parse warning

mainScene.getStylesheets().add("assets/stylesheet.css");

  

// Create the Label displaying the decimal number that will change as the ComboBox options change.

Label resultText = new Label("[Decimal Will Display Here]");

  

// -----------------------------------------------------

// Create the ComboBoxes for picking the Binary numbers.

// ----------------------------------------------------

// Create ComboBox for Value 1.

ComboBox<Integer> chooser1 = new ComboBox<Integer>();

chooser1.getItems().addAll(0, 1);

chooser1.setValue(0);

chooser1.valueProperty().addListener(

(ObservableValue<? extends Integer> ov, Integer oldValue, Integer newValue) ->

{

resultText.setText("The number chosen is now " + newValue + ". \n");

}

);

chooser1.getStyleClass().add("combo-box");

  

// Create ComboBox for Value 2.

ComboBox<Integer> chooser2 = new ComboBox<Integer>();

chooser2.getItems().addAll(0, 1);

chooser2.setValue(0);

chooser2.valueProperty().addListener(

(ObservableValue<? extends Integer> ov, Integer oldValue, Integer newValue) ->

{

resultText.setText("The number chosen is now " + newValue + ". \n");

}

);

chooser2.getStyleClass().add("combo-box");

  

// Create ComboBox for Value 3.

ComboBox<Integer> chooser3 = new ComboBox<Integer>();

chooser3.getItems().addAll(0, 1);

chooser3.setValue(0);

chooser3.valueProperty().addListener(

(ObservableValue<? extends Integer> ov, Integer oldValue, Integer newValue) ->

{

resultText.setText("The number chosen is now " + newValue + ". \n");

}

);

chooser3.getStyleClass().add("combo-box");

  

// Create ComboBox for Value 4.

ComboBox<Integer> chooser4 = new ComboBox<Integer>();

chooser4.getItems().addAll(0, 1);

chooser4.setValue(0);

chooser4.valueProperty().addListener(

(ObservableValue<? extends Integer> ov, Integer oldValue, Integer newValue) ->

{

resultText.setText("The number chosen is now " + newValue + ". \n");

}

);

chooser4.getStyleClass().add("combo-box");

  

// Create the HBoxes for organizing the ComboBoxes and resultText in the layout.

HBox comboRow = new HBox();

comboRow.getChildren().addAll(chooser1, chooser2, chooser3, chooser4);

HBox textRow = new HBox();

textRow.getChildren().addAll(resultText);

  

centerBox.getChildren().addAll(comboRow, textRow);

  

/*

// most generic functional interface: no inputs, no output, contains method run()

// The code for changing the decimal value based on the ComboBox choices will be here.

Runnable updateFunction = () ->

{

  

};

*/

// When the Credits and Description option is clicked.

info.setOnAction((ActionEvent event) ->

{

   // Alert containing information for the user to read.

   Alert infoAlert = new Alert( AlertType.INFORMATION );

   infoAlert.setTitle("Binary Numbers to Decimals");

   infoAlert.setHeaderText("Credits and Description");

   infoAlert.setContentText("Author: Daniel Castro \n\n" +

   "This program demonstrates how binary numbers are related \n" +

   "to decimal numbers. The user can choose some of the digits \n" +

   "of the binary number, and the displayed decimal will change \n" +

   "accordingly.");

   // Display the window and wait.

   infoAlert.showAndWait();

});

// Allow the user to quit the program.

quit.setOnAction((ActionEvent event) ->

{

mainStage.close();

});

// custom code above --------------------------------------------

mainStage.show();

}

}

Answer 1

Hello, Here is my Solution according to your code for 8 digit Binary to Decimal

I have provided ScreenShots and Code below

DESMethod.java

import javafx.application. * ;
import javafx.stage. * ;
import javafx.stage.FileChooser. * ;
import javafx.scene. * ;
import javafx.scene.control. * ;
import javafx.scene.control.Alert. * ;
import javafx.scene.input. * ;
import javafx.scene.layout. * ;
import javafx.scene.canvas. * ;
import javafx.scene.paint. * ;
import javafx.scene.effect. * ;
import javafx.scene.shape. * ;
import javafx.scene.text. * ;
import javafx.event. * ;
import javafx.animation. * ;
import javafx.geometry. * ;
import java.util. * ;
import javafx.beans.value. * ;

public class DESMethod extends Application

{

public static void main(String[] args)
{
try
{
launch(args);
}
catch(Exception e)
{
e.printStackTrace();
}
finally
{
System.exit(0);
}
}

public static Integer a1=0,a2=0,a3=0,a4=0,a5=0,a6=0,a7=0,a8=0;
static public int printA(){
String binary = a1.toString()+a2.toString()+a3.toString()+a4.toString()+
a5.toString()+a6.toString()+a7.toString()+a8.toString();
int ans = Integer.parseInt(binary,2);
return ans;
}

public void start(Stage mainStage)

{

mainStage.setTitle("Binary Numbers to Decimals!");

BorderPane root = new BorderPane();

// make text bigger
root.setStyle("-fx-font-size: 20;");

// Create and set up the Menu Bar.
MenuBar bar = new MenuBar();

root.setTop(bar);

// Create the File and About Menus, and add them to the MenuBar.
Menu fileMenu = new Menu("File");

Menu aboutMenu = new Menu("About");

bar.getMenus().addAll(fileMenu, aboutMenu);

// Create the MenuItems for the File and About Menus.
MenuItem quit = new MenuItem("Quit");

MenuItem info = new MenuItem("Credits and Description");

// Add the MenuItems to their respective sub menus.
fileMenu.getItems().addAll(quit);

aboutMenu.getItems().addAll(info);

VBox centerBox = new VBox();

centerBox.setPadding(new Insets(16));

centerBox.setSpacing(8);

root.setCenter(centerBox);

Scene mainScene = new Scene(root);

mainStage.setScene(mainScene);

// The following line loads a stylesheet file; incorrect syntax will generate a parse warning
mainScene.getStylesheets().add("assets/stylesheet.css");

// Create the Label displaying the decimal number that will change as the ComboBox options change.
Label resultText = new Label("[Decimal Will Display Here]");

// -----------------------------------------------------
// Create the ComboBoxes for picking the Binary numbers.
// ----------------------------------------------------
// Create ComboBox for Value 1.

ComboBox < Integer > chooser1 = new ComboBox < Integer > ();

chooser1.getItems().addAll(0, 1);

chooser1.setValue(0);

chooser1.valueProperty().addListener(
(ObservableValue < ?extends Integer > ov, Integer oldValue, Integer newValue) ->
{
a1= newValue;
resultText.setText("The number chosen is now " + printA() + ". \n");
});

chooser1.getStyleClass().add("combo-box");

// Create ComboBox for Value 2.
ComboBox < Integer > chooser2 = new ComboBox < Integer > ();

chooser2.getItems().addAll(0, 1);

chooser2.setValue(0);

chooser2.valueProperty().addListener(
(ObservableValue < ?extends Integer > ov, Integer oldValue, Integer newValue) ->
{
a2= newValue;
resultText.setText("The number chosen is now " + printA() + ". \n");
});

chooser2.getStyleClass().add("combo-box");

// Create ComboBox for Value 3.
ComboBox < Integer > chooser3 = new ComboBox < Integer > ();

chooser3.getItems().addAll(0, 1);

chooser3.setValue(0);

chooser3.valueProperty().addListener(
(ObservableValue < ?extends Integer > ov, Integer oldValue, Integer newValue) ->
{
a3= newValue;
resultText.setText("The number chosen is now " + printA() + ". \n");
});

chooser3.getStyleClass().add("combo-box");

// Create ComboBox for Value 4.
ComboBox < Integer > chooser4 = new ComboBox < Integer > ();

chooser4.getItems().addAll(0, 1);

chooser4.setValue(0);

chooser4.valueProperty().addListener(
(ObservableValue < ?extends Integer > ov, Integer oldValue, Integer newValue) ->
{
a4= newValue;
resultText.setText("The number chosen is now " + printA() + ". \n");
});

chooser4.getStyleClass().add("combo-box");

// Create ComboBox for Value 5.
ComboBox < Integer > chooser5 = new ComboBox < Integer > ();

chooser5.getItems().addAll(0, 1);

chooser5.setValue(0);

chooser5.valueProperty().addListener(
(ObservableValue < ?extends Integer > ov, Integer oldValue, Integer newValue) ->
{
a5= newValue;
resultText.setText("The number chosen is now " + printA() + ". \n");
});

chooser5.getStyleClass().add("combo-box");

// Create ComboBox for Value 6.
ComboBox < Integer > chooser6 = new ComboBox < Integer > ();

chooser6.getItems().addAll(0, 1);

chooser6.setValue(0);

chooser6.valueProperty().addListener(
(ObservableValue < ?extends Integer > ov, Integer oldValue, Integer newValue) ->
{
a6= newValue;
resultText.setText("The number chosen is now " + printA() + ". \n");
});

chooser6.getStyleClass().add("combo-box");

// Create ComboBox for Value 7.
ComboBox < Integer > chooser7 = new ComboBox < Integer > ();

chooser7.getItems().addAll(0, 1);

chooser7.setValue(0);

chooser7.valueProperty().addListener(
(ObservableValue < ?extends Integer > ov, Integer oldValue, Integer newValue) ->
{
a7= newValue;
resultText.setText("The number chosen is now " + printA() + ". \n");
});

chooser7.getStyleClass().add("combo-box");

// Create ComboBox for Value 8.
ComboBox < Integer > chooser8 = new ComboBox < Integer > ();

chooser8.getItems().addAll(0, 1);

chooser8.setValue(0);

chooser8.valueProperty().addListener(
(ObservableValue < ?extends Integer > ov, Integer oldValue, Integer newValue) ->
{
a8= newValue;
resultText.setText("The number chosen is now " + printA() + ". \n");
});

chooser8.getStyleClass().add("combo-box");

// Create the HBoxes for organizing the ComboBoxes and resultText in the layout.
HBox comboRow = new HBox();

comboRow.getChildren().addAll(chooser1, chooser2, chooser3, chooser4, chooser5 , chooser6 , chooser7, chooser8);

HBox textRow = new HBox();

textRow.getChildren().addAll(resultText);

centerBox.getChildren().addAll(comboRow, textRow);

       /*

// most generic functional interface: no inputs, no output, contains method run()

// The code for changing the decimal value based on the ComboBox choices will be here.

Runnable updateFunction = () ->

{

};

*/

// When the Credits and Description option is clicked.
info.setOnAction((ActionEvent event) ->
{
// Alert containing information for the user to read.
Alert infoAlert = new Alert(AlertType.INFORMATION);

infoAlert.setTitle("Binary Numbers to Decimals");

infoAlert.setHeaderText("Credits and Description");

infoAlert.setContentText("Author: Daniel Castro \n\n" +

"This program demonstrates how binary numbers are related \n" +

"to decimal numbers. The user can choose some of the digits \n" +

"of the binary number, and the displayed decimal will change \n" +

"accordingly.");

// Display the window and wait.
infoAlert.showAndWait();

       });

// Allow the user to quit the program.
quit.setOnAction((ActionEvent event) -> {
mainStage.close();
});

// custom code above --------------------------------------------
mainStage.show();

}

}

Thanks and Regards.

Happy Coding!