Implement complex user interfaces using the new JavaFX layout components in Java 13

Use the new JavaFX layout components in Java 13 to implement complex user interfaces

In software development, the user interface is a very important part. A good user interface can improve the user experience and increase the ease of use and attractiveness of the software. JavaFX is a Java library for building rich interactive applications. It provides a set of powerful layout components that can help developers implement complex user interfaces.

JavaFX has become part of Java 13, which includes a number of new layout components that make it easier to build complex user interfaces.

In this article, we will introduce two new layout components in JavaFX 13: FlowPane and GridPane, and demonstrate how to use them to implement complex user interfaces.

First, let’s learn about FlowPane. FlowPane is an autolayout component that automatically adjusts the size and position of child components to fit the size of the container.

The following is a simple example using FlowPane:

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.FlowPane;
import javafx.stage.Stage;

public class FlowPaneExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        FlowPane flowPane = new FlowPane();
        flowPane.setPadding(new Insets(20));
        flowPane.setVgap(10);
        flowPane.setHgap(10);

        Button button1 = new Button("Button 1");
        Button button2 = new Button("Button 2");
        Button button3 = new Button("Button 3");

        flowPane.getChildren().addAll(button1, button2, button3);

        Scene scene = new Scene(flowPane, 400, 300);
        
        primaryStage.setScene(scene);
        primaryStage.setTitle("FlowPane Example");
        primaryStage.show();
    }

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

The above example is a simple application that uses FlowPane to lay out three buttons. FlowPane automatically adjusts the button's position and size based on the size of the container.

Next, let us introduce another new layout component in JavaFX 13: GridPane. GridPane is a table layout component that places child components in different cells in the grid.

The following is a simple example of using GridPane:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.ColumnConstraints;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.RowConstraints;
import javafx.stage.Stage;

public class GridPaneExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        GridPane gridPane = new GridPane();
        gridPane.setHgap(10);
        gridPane.setVgap(10);

        ColumnConstraints column1 = new ColumnConstraints(100);
        ColumnConstraints column2 = new ColumnConstraints(100);

        RowConstraints row1 = new RowConstraints(50);
        RowConstraints row2 = new RowConstraints(50);

        gridPane.getColumnConstraints().addAll(column1, column2);
        gridPane.getRowConstraints().addAll(row1, row2);

        Button button1 = new Button("Button 1");
        Button button2 = new Button("Button 2");
        Button button3 = new Button("Button 3");
        Button button4 = new Button("Button 4");

        gridPane.add(button1, 0, 0);
        gridPane.add(button2, 1, 0);
        gridPane.add(button3, 0, 1);
        gridPane.add(button4, 1, 1);

        Scene scene = new Scene(gridPane, 400, 300);

        primaryStage.setScene(scene);
        primaryStage.setTitle("GridPane Example");
        primaryStage.show();
    }

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

The above example is a simple application that uses GridPane to lay out four buttons. The GridPane automatically places buttons at the appropriate location and size, and the grid can be resized by setting constraints on columns and rows.

The above demonstrates two new layout components in JavaFX 13, which can help developers implement complex user interfaces. These layout components provide more flexibility and power, making it easier to build complex user interfaces.

I hope the examples in this article can help you understand how to use JavaFX layout components to implement complex user interfaces. Get started and design an attractive user interface!

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