JavaFX | FontWeight Class

FontWeight class is a part of JavaFX. FontWeight class defines the weight of the font. FontWeight class specifies different font weights which can be used when searching for a font on the system. FontWeight class inherits Enum class.

Commonly Used Methods:

Method Explanation
findByName(String n) Returns FontWeight by its name.
findByWeight(int w) Returns the closest FontWeight for a weight value.
getWeight() Return the visual weight.
valueOf(String n) Returns the enum constant of this type with the specified name.
values() returns all the values of the FontWeight type.

Below programs illustrate the use of FontWeight Class:



  1. Java program to create a TextFlow and add text object to it, set text Alignment and also set font weight of the font of the text and set line spacing of the text flow: In this program we will create a TilePane named tile_pane. Add Label named label and some buttons to the tile_pane. Set the Alignment of the tile_pane using the setAlignment() function. Set the Font weight of the font to EXTRA_BOLD. Add the tile_pane to the scene and add the scene to the stage and call the show() function to display the final results.
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    // Java program to create a TextFlow and
    // add text object to it, set text Alignment
    // and also set font weight of the font of text
    // and set line spacing of the text flow.
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.control.*;
    import javafx.scene.layout.*;
    import javafx.stage.Stage;
    import javafx.scene.layout.*;
    import javafx.scene.paint.*;
    import javafx.scene.text.*;
    import javafx.geometry.*;
    import javafx.scene.layout.*;
    import javafx.scene.shape.*;
      
    public class FontWeight_1 extends Application {
      
        // launch the application
        public void start(Stage stage)
        {
      
            try {
      
                // set title for the stage
                stage.setTitle("FontWeight");
      
                // create TextFlow
                TextFlow text_flow = new TextFlow();
      
                // create text
                Text text_1 = new Text("GeeksforGeeks\n");
      
                // set the text color
                text_1.setFill(Color.GREEN);
      
                // set font of the text
                text_1.setFont(Font.font("Verdana", FontWeight.EXTRA_BOLD, 25));
      
                // set text
                text_flow.getChildren().add(text_1);
      
                // set text Alignment
                text_flow.setTextAlignment(TextAlignment.CENTER);
      
                // set line spacing
                text_flow.setLineSpacing(20.0f);
      
                // create VBox
                VBox vbox = new VBox(text_flow);
      
                // set alignment of vbox
                vbox.setAlignment(Pos.CENTER);
      
                // create a scene
                Scene scene = new Scene(vbox, 400, 300);
      
                // set the scene
                stage.setScene(scene);
      
                stage.show();
            }
      
            catch (Exception e) {
      
                System.out.println(e.getMessage());
            }
        }
      
        // Main Method
        public static void main(String args[])
        {
      
            // launch the application
            launch(args);
        }
    }

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    Output:

  2. Java program to create a TextFlow and add text object to it, set text Alignment and also set font weight of the font of the text and also set a combo box to change font weight and set line spacing of the text flow: In this program we will create a TilePane named tile_pane. Add Label named label and some buttons to the tile_pane. Set the Alignment of the tile_pane using the setAlignment() function. Now set the FontWeight of the font to EXTRA_BOLD. Store all the names of FontWeight values in a String array. Now create a combobox which will contain the names of FontWeight values and also create an Action Event to handle the combobox events. The Event handler will set the font weight of the font to the chosen FontWeight value. Now create a VBox and add the tilepane and the combo box to vbox. Finally, add the vbox to the scene and add the scene to the stage and call the show() function to display the final results.
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    // Java program to create a TextFlow and
    // add text object to it, set text Alignment
    // and also set font weight of the font of text
    // and also set a combo box to change font weight
    // and set line spacing of the text flow.
    import javafx.application.Application;
    import javafx.scene.Scene;
    import javafx.scene.control.*;
    import javafx.scene.layout.*;
    import javafx.stage.Stage;
    import javafx.scene.layout.*;
    import javafx.scene.paint.*;
    import javafx.scene.text.*;
    import javafx.geometry.*;
    import javafx.scene.layout.*;
    import javafx.scene.shape.*;
    import javafx.collections.*;
    import javafx.event.ActionEvent;
    import javafx.event.EventHandler;
      
    public class FontWeight_2 extends Application {
      
    // launch the application
    public void start(Stage stage)
    {
      
        try {
      
            // set title for the stage
            stage.setTitle("FontWeight");
      
            // create TextFlow
            TextFlow text_flow = new TextFlow();
      
            // create text
            Text text_1 = new Text("GeeksforGeeks\n");
      
            // set the text color
            text_1.setFill(Color.GREEN);
      
            // set font of the text
            text_1.setFont(Font.font(Font.getFontNames().get(0),
                                    FontWeight.EXTRA_BOLD, 50));
      
            // font weight names
            String weight[] = {"BLACK", "BOLD"
                               "EXTRA_BOLD"
                               "EXTRA_LIGHT"
                               "LIGHT"
                               "MEDIUM"
                               "NORMAL"
                               "SEMI_BOLD",
                               "THIN" };
      
            // Create a combo box
            ComboBox combo_box = 
              new ComboBox(FXCollections.observableArrayList(weight));
      
            // Create action event
            EventHandler<ActionEvent> event = new EventHandler<ActionEvent>() {
      
                public void handle(ActionEvent e)
                {
                      
                    // set font of the text
                    text_1.setFont(Font.font(Font.getFontNames().get(0), 
                     FontWeight.valueOf((String)combo_box.getValue()), 50));
                }
            };
      
            // Set on action
            combo_box.setOnAction(event);
      
            // set text
            text_flow.getChildren().add(text_1);
      
            // set text Alignment
            text_flow.setTextAlignment(TextAlignment.CENTER);
      
            // set line spacing
            text_flow.setLineSpacing(20.0f);
      
            // create VBox
            VBox vbox = new VBox(combo_box, text_flow);
      
            // set alignment of vbox
            vbox.setAlignment(Pos.CENTER);
      
            // create a scene
            Scene scene = new Scene(vbox, 400, 300);
      
            // set the scene
            stage.setScene(scene);
      
            stage.show();
        }
      
        catch (Exception e) {
      
            System.out.println(e.getMessage());
        }
    }
      
    // Main Method
    public static void main(String args[])
    {
      
        // launch the application
        launch(args);
    }
    }

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    Output:

Note: The above programs might not run in an online IDE please use an offline compiler.

Reference: https://docs.oracle.com/javase/8/javafx/api/javafx/scene/text/FontWeight.html



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