java fxというタイトルのボーダーは解決できません

Question

テーマが似ていますが問題は解決できませんでした.iはgui用の小さなコードを持っていますが、私のウィンドウにはその枠とタイトルがありません。私が得た最も近い国境だったとちょうど怒鳴るtitle.Hereは私のコードです：

public class NumberAddition extends Application { 

BorderedTitledPane root; 
GridPane pane = new GridPane(); 

@Override 
public void start(Stage primaryStage) { 
    Label first_lbl = new Label("First number: "); 
    pane.setConstraints(first_lbl, 0, 0); 
    Label second_lbl = new Label("Second number: "); 
    pane.setConstraints(second_lbl, 0, 1); 
    Label third_lbl = new Label("Result: "); 
    pane.setConstraints(third_lbl, 0, 2); 
    Button btn = new Button(); 
    btn.setText("Add"); 
    btn.setMinWidth(70); 

    Button btn_1 = new Button(); 
    btn_1.setText("Clear"); 
    btn_1.setMinWidth(70); 

    Button btn_2 = new Button(); 
    btn_2.setText("Exit"); 
    TextField txt_1 = new TextField(); 
    txt_1.setPrefWidth(200); 
    pane.setConstraints(txt_1, 1, 0); 
    TextField txt_2 = new TextField(); 
    txt_2.setPrefWidth(200); 
    pane.setConstraints(txt_2, 1, 1); 
    TextField txt_3 = new TextField(); 
    txt_3.setPrefWidth(200); 
    pane.setConstraints(txt_3, 1, 2); 

    HBox box = new HBox(); 
    pane.setConstraints(box, 1, 4); 
    box.setPadding(new Insets(5, 50, 5, 50)); 
    box.setSpacing(50); 

    box.getChildren().addAll(btn, btn_1); 

    root = new BorderedTitledPane("Number addition"); 
    root.setPadding(new Insets(20, 20, 20, 20)); 
    root.getStylesheets().add(getClass().getResource("bordered-titled-title.css").toExternalForm()); 
    root.getChildren().add(pane); 

    pane.setPadding(new Insets(20, 20, 20, 20)); 
    pane.setVgap(5); 
    pane.setHgap(5); 
    pane.getChildren().addAll(first_lbl, txt_1, second_lbl, txt_2, third_lbl, txt_3, box); 

    // root.getChildren().add(btn); 
    Scene scene = new Scene(root, 450, 250); 

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

/** 
* @param args the command line arguments 
*/ 
public static void main(String[] args) { 
    launch(args); 
    } 
    } 



public class BorderedTitledPane extends StackPane{ 
BorderedTitledPane(String titleString) { 
Label title = new Label(" " + titleString + " "); 
title.getStyleClass().add("bordered-titled-title"); 
StackPane.setAlignment(title, Pos.TOP_LEFT); 

getStyleClass().add("bordered-titled-border"); 
this.getChildren().addAll(title); 
    } 

} 

とCSS：

.label { 
    -fx-font: 12px sans-serif; 
} 

.bordered-titled-title { 
    -fx-background-color: white; 
    -fx-translate-y: -16; 
} 

.bordered-titled-border { 
    -fx-content-display: top; 
    -fx-border-insets: 20 15 15 15; 
    -fx-background-color: white; 
    -fx-border-color: black; 
    -fx-border-width: 2; 
} 

.bordered-titled-content { 
    -fx-padding: 26 10 10 10; 
} 

Answer 1

このよう

public class NumberAddition extends Application { 
    GridPane pane = new GridPane(); 
    @SuppressWarnings("static-access") 
    @Override 
    public void start(Stage primaryStage) { 

     Label first_lbl = new Label("First number: "); 
     pane.setConstraints(first_lbl, 0, 0); 
     Label second_lbl = new Label("Second number: "); 
     pane.setConstraints(second_lbl, 0, 1); 
     Label third_lbl = new Label("Result: "); 
     pane.setConstraints(third_lbl, 0, 2); 
     Button btn = new Button(); 
     btn.setText("Add"); 
     btn.setMinWidth(70); 

     Button btn_1 = new Button(); 
     btn_1.setText("Clear"); 
     btn_1.setMinWidth(70); 

     Button btn_2 = new Button(); 
     btn_2.setText("Exit"); 
     TextField txt_1 = new TextField(); 
     txt_1.setPrefWidth(200); 
     pane.setConstraints(txt_1, 1, 0); 
     TextField txt_2 = new TextField(); 
     txt_2.setPrefWidth(200); 
     pane.setConstraints(txt_2, 1, 1); 
     TextField txt_3 = new TextField(); 
     txt_3.setPrefWidth(200); 
     pane.setConstraints(txt_3, 1, 2); 

     HBox box = new HBox(); 
     pane.setConstraints(box, 1, 4); 
     box.setPadding(new Insets(5, 50, 5, 50)); 
     box.setSpacing(50); 
     box.getChildren().addAll(btn, btn_1); 

     pane.setVgap(5); 
     pane.setHgap(5); 
     pane.getChildren().addAll(first_lbl, txt_1, second_lbl, txt_2, third_lbl, txt_3, box); 

     final String TITLE = "Number addition"; 
     Pane titledContent = new BorderedTitledPane(TITLE, pane); 
     titledContent.setStyle("-fx-content-display: top;" + "-fx-border-insets: 20 15 15 15;" 
       + "-fx-background-color: #eff1f4;" + "-fx-border-color: black;" + "-fx-border-width: 0.5;"); 
     titledContent.setPrefSize(pane.getMaxWidth(), pane.getMaxHeight()); 

     Scene scene = new Scene(titledContent); 
     primaryStage.setScene(scene); 
     primaryStage.show(); 
    } 

    public static void main(String[] args) { 
     launch(args); 
    } 

    class BorderedTitledPane extends StackPane { 
     BorderedTitledPane(String titleString, Node content) { 
      Label title = new Label(" " + titleString + " "); 
      title.setStyle("-fx-background-color: #eff1f4;" + "-fx-translate-y: -10;"); 
      title.setFont(Font.font(null, FontWeight.BOLD, 14)); 
      StackPane.setAlignment(title, Pos.TOP_CENTER); 
      StackPane contentPane = new StackPane(); 
      content.setStyle("-fx-padding: 20 5 5 5;"); 
      contentPane.getChildren().add(content); 
      getChildren().addAll(title, contentPane); 
     } 
    } 
} 

を使用します