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Ingy döt Net
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199093 changed files with 3378972 additions and 0 deletions
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import java.awt.GridLayout;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.awt.event.KeyEvent;
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import java.awt.event.KeyListener;
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import javax.swing.JButton;
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import javax.swing.JFrame;
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import javax.swing.JPanel;
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import javax.swing.JTextField;
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import javax.swing.SwingUtilities;
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public class Interact extends JFrame{
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final JTextField numberField;
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final JButton incButton, decButton;
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public Interact(){
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//stop the GUI threads when the user hits the X button
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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numberField = new JTextField();
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incButton = new JButton("Increment");
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decButton = new JButton("Decrement");
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numberField.setText("0");//start at 0
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decButton.setEnabled(false);//we're already at 0
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//listen for button presses in the text field
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numberField.addKeyListener(new KeyListener(){
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@Override
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public void keyTyped(KeyEvent e) {
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//if the entered character is not a digit
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if(!Character.isDigit(e.getKeyChar())){
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//eat the event (i.e. stop it from being processed)
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e.consume();
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}else if(Character.isDigit(e.getKeyChar())){
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//This method is executed from the event thread and updating the GUI
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//from there doesn't always work. invokeLater will ensure that the
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//GUI is updated
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SwingUtilities.invokeLater(new Runnable() {
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@Override
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public void run() {
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String text = numberField.getText();
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if(text.isEmpty()){//default to 0 when all text is erased
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numberField.setText("0");
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decButton.setEnabled(false);
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incButton.setEnabled(true);
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return;
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}
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if(Long.valueOf(text) <= 0){
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decButton.setEnabled(false);
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incButton.setEnabled(true);
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}else if(Long.valueOf(text) >= 10){
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incButton.setEnabled(false);
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decButton.setEnabled(true);
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}else{
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incButton.setEnabled(true);
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decButton.setEnabled(true);
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}
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}
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});
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}
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}
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@Override
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public void keyReleased(KeyEvent e){}
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@Override
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public void keyPressed(KeyEvent e){
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//backspace and delete don't register in keyTyped because they don't
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//display a Unicode character, so they must be handled here
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if(e.getKeyCode() == KeyEvent.VK_BACK_SPACE ||
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e.getKeyCode() == KeyEvent.VK_DELETE){
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SwingUtilities.invokeLater(new Runnable() {
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@Override
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public void run() {
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String text = numberField.getText();
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if(text.isEmpty()){
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numberField.setText("0");
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decButton.setEnabled(false);
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incButton.setEnabled(true);
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return;
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}
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if(Long.valueOf(text) <= 0){
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decButton.setEnabled(false);
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incButton.setEnabled(true);
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}else if(Long.valueOf(text) >= 10){
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incButton.setEnabled(false);
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decButton.setEnabled(true);
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}else{
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incButton.setEnabled(true);
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decButton.setEnabled(true);
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}
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}
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});
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}
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}
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});
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//listen for button clicks on the increment button
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incButton.addActionListener(new ActionListener(){
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@Override
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public void actionPerformed(ActionEvent e) {
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String text = numberField.getText();
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numberField.setText((Long.valueOf(text) + 1) + "");
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if(Long.valueOf(text) + 1 >= 10){
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incButton.setEnabled(false);
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}
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if(Long.valueOf(text) + 1 > 0){
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decButton.setEnabled(true);
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}
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}
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});
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//listen for button clicks on the random button
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decButton.addActionListener(new ActionListener(){
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@Override
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public void actionPerformed(ActionEvent e) {
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String text = numberField.getText();
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numberField.setText((Long.valueOf(text) - 1) + "");
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if(Long.valueOf(text) - 1 <= 0){
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decButton.setEnabled(false);
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}
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if(Long.valueOf(text) - 1 < 10){
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incButton.setEnabled(true);
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}
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}
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});
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//arrange the components in a grid with 2 rows and 1 column
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setLayout(new GridLayout(2, 1));
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//a secondary panel for arranging both buttons in one grid space in the window
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JPanel buttonPanel = new JPanel();
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//the buttons are in a grid with 1 row and 2 columns
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buttonPanel.setLayout(new GridLayout(1, 2));
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//add the buttons
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buttonPanel.add(incButton);
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buttonPanel.add(decButton);
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//put the number field on top of the buttons
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add(numberField);
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add(buttonPanel);
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//size the window appropriately
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pack();
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}
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public static void main(String[] args){
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new Interact().setVisible(true);
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}
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}
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import javafx.application.Application;
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import javafx.beans.property.LongProperty;
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import javafx.beans.property.SimpleLongProperty;
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import javafx.scene.Scene;
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import javafx.scene.control.Button;
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import javafx.scene.control.TextField;
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import javafx.scene.layout.HBox;
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import javafx.scene.layout.VBox;
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import javafx.stage.Stage;
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import javafx.util.converter.NumberStringConverter;
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public class InteractFX extends Application {
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public static void main(String[] args) {
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launch(args);
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}
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@Override
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public void start(Stage stage) throws Exception {
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TextField input = new TextField("0"){
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// only accept numbers as input
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@Override public void replaceText(int start, int end, String text) {
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if (text.matches("[0-9]*")) {
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super.replaceText(start, end, text);
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}
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}
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// only accept numbers on copy+paste
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@Override public void replaceSelection(String text) {
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if (text.matches("[0-9]*")) {
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super.replaceSelection(text);
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}
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}
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};
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// when the textfield is empty, replace text with "0"
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input.textProperty().addListener((observable, oldValue, newValue)->{
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if(newValue == null || newValue.trim().isEmpty()){
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input.setText("0");
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}
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});
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// get a bi-directional bound long-property of the input value
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LongProperty inputValue = new SimpleLongProperty();
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input.textProperty().bindBidirectional(inputValue, new NumberStringConverter());
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// textfield is disabled when the current value is other than "0"
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input.disableProperty().bind(inputValue.isNotEqualTo(0));
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Button increment = new Button("Increment");
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increment.setOnAction(event-> inputValue.set(inputValue.get() + 1));
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// incr-button is disabled when input is >= 10
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increment.disableProperty().bind(inputValue.greaterThanOrEqualTo(10));
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Button decrement = new Button("Decrement");
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decrement.setOnAction(event-> inputValue.set(inputValue.get() - 1));
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// decrement button is disabled when input is <=0
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decrement.disableProperty().bind(inputValue.lessThanOrEqualTo(0));
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// layout
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VBox root = new VBox();
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root.getChildren().add(input);
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HBox buttons = new HBox();
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buttons.getChildren().addAll(increment,decrement);
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root.getChildren().add(buttons);
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stage.setScene(new Scene(root));
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stage.sizeToScene();
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stage.show();
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}
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}
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