JAVAFX$****$ Why won't my stack list show up in my list view? I've made it observable but it won't work:

import java.io$.*$;

import java.util.$*$;

import javafx.application.Application;

import javafx.collections.FXCollections;

import javafx.collections.ObservableList;

import javafx.geometry.Pos;

import javafx.scene.Scene;

import javafx.scene.control.Button;

import javafx.scene.control.Label;

import javafx.scene.control.ListView;

import javafx.scene.control.TextField;

import javafx.scene.layout.Background;

import javafx.scene.layout.GridPane;

import javafx.scene.layout.Pane;

import static javafx.scene.paint.Color.GREEN;

import static javafx.scene.paint.Color.WHITE;

import javafx.stage.Stage;

public class VisualStack extends Application$\{$

Button push $=$ new Button$("$PUSH$")$;

Button pop $=$ new Button$("$POP$")$;

Button peek $=$ new Button$("$PEEK$")$;

TextField textInput $=$ new TextField$()$;

Label title $=$ new Label$("$My Visual Stack. Stack Size: $23")$;

Label popLabel $=$ new Label$()$;

Label peekLabel $=$ new Label$()$;

Label error $=$ new Label$("$Error:$")$;

Label stack $=$ new Label$("$Stack$")$;

Stack list $=$ new Stack$<>()$;

ObservableList list$1=$ FXCollections.observableList$($list$)$;

ListView stackArea $=$ new ListView$<>($list$1)$;

GridPane layoutPane $=$ new GridPane$()$;

Pane backgroundPane $=$ new Pane$()$;

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

list.ensureCapacity$(23)$;

title.setTextFill$($WHITE$)$;

error.setTextFill$($WHITE$)$;

stack.setTextFill$($WHITE$)$;

push.setMinSize$(100,10)$;

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

list.push$($textInput$.$getText$())$;

textInput.setText$("")$;

$\})$;

pop.setMinSize$(100,10)$;

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

popLabel.setText$(($String$)$list$.$pop$())$;

list.pop$()$;

$\})$;

peek.setMinSize$(100,10)$;

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

peekLabel.setText$(($String$)$list$.$peek$())$;

list.peek$()$;

$\})$;

layoutPane.setHgap$(10)$;

layoutPane.setVgap$(10)$;

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

layoutPane.add$($title$,0,0)$;

layoutPane.add$($push$,0,1)$;

layoutPane.add$($textInput$,1,1)$;

layoutPane.add$($pop$,0,2)$;

layoutPane.add$($peek$,0,3)$;

layoutPane.add$($error$,0,4)$;

layoutPane.add$($stack$,3,1)$;

layoutPane.add$($stackArea$,3,2)$;

layoutPane.add$($popLabel$,3,3)$;

layoutPane.add$($peekLabel$,4,3)$;

backgroundPane.setBackground$($Background$.$fill$($GREEN$))$;

backgroundPane.getChildren$().$add$($layoutPane$)$;

Scene scene $=$ new Scene$($backgroundPane$,800,600)$;

primaryStage.setTitle$("$Visual Stack"$)$;

primaryStage.setScene$($scene$)$;

primaryStage.show$()$;

$\}$

public static void main$($String$[]$ args$)\{$

launch$($args$)$;

$\}$

$\}$