Java$/$JavaFX program help package Chapter$14\_$Lab$\_$Solution;

import java.text.DecimalFormat;

import javafx.application.Application;

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.ChoiceBox;

import javafx.scene.control.Label;

import javafx.scene.control.TextField;

import javafx.scene.layout.BorderPane;

import javafx.scene.layout.GridPane;

import javafx.scene.layout.HBox;

import javafx.stage.Stage;

public class GradeBookFX$\_$Starter$\_$Code extends Application $\{$

$//$ these text fields have to be defined here so the loadTheGrid method can find them.

TextField txAssignmentsPossPoints $=$ new TextField$()$;

TextField txReviewQuizzesPossPoints $=$ new TextField$()$;

TextField txProjectPossPoints $=$ new TextField$()$;

TextField txMidTermPossPoints $=$ new TextField$()$;

TextField txFinalPossPoints $=$ new TextField$()$;

@Override $//$ Override the start method in the APossPointslication class

public void start$($Stage primaryStage$)\{$

Button btDisplayGrade $=$ new Button$("\_$Display Grade"$)$;

btDisplayGrade.setMnemonicParsing$($true$)$;

Button btClearAnswers $=$ new Button$("\_$Clear"$)$;

btClearAnswers.setMnemonicParsing$($true$)$;

Button btnExit $=$ new Button$("$E$\_$xit"$)$;

btnExit.setMnemonicParsing$($true$)$;

HBox hBox $=$ new HBox$($btDisplayGrade$,$ btClearAnswers, btnExit$)$;

hBox.setSpacing$(10)$;

hBox.setAlignment $($Pos$.$CENTER$)$;

hBox.setPadding$($new Insets$(5,5,5,5))$;

BorderPane borderPane $=$ new BorderPane$()$;

borderPane.setTop$($hBox$)$;

GridPane gridPane $=$ new GridPane$()$;

gridPane.setAlignment$($Pos$.$CENTER$)$;

ChoiceBox weekChoiceBox.setOnAction$($event $->\{$

loadTheGrid$($weekChoiceBox$.$getValue$())$;

$\})$;

$//$ TODO $-$ create the GUI

borderPane.setCenter$($gridPane$)$;

btDisplayGrade.setOnAction$($e $->\{$

$//$ TODO $-$ get the points entered by the user $-$ make sure there is data in the

$//$ text field, if it is blank use a zero

$//$ TODO $-$ total the possible points and the points earned so far

$//$ TODO $-$ replace the values to the final version

DecimalFormat df $=$ new DecimalFormat$("$##$.$##$\%")$;

double percent $=(90\mathrm{.}0/100\mathrm{.}0)$;

String formattedPercent $=$ df$.$format$($percent$)$;

$//$ next line is for testing only

System.out.println$("$final grade $"+$ formattedPercent$)$;

$//$ uncomment next line when you have the text field ready.

txFinalAverage.setText$($formattedPercent$)$;

$\})$;

btClearAnswers.setOnAction$($new EventHandler