How to use JavaFX to build responsive UI interfaces in Java 9

How to use JavaFX to build a responsive UI interface in Java 9

Introduction:
In the development process of computer applications, the user interface (UI) is a very important part. A good UI can improve the user experience and make the application more attractive. JavaFX is a graphical user interface (GUI) framework on the Java platform. It provides a rich set of tools and APIs to quickly build interactive UI interfaces. In Java 9, JavaFX has become a part of Java SE, so it is more convenient and easier to use. This article will introduce how to use JavaFX to build a responsive UI interface in Java 9, with corresponding code examples.

1. Install JavaFX:
   First, we need to make sure that we have Java 9 installed and that JavaFX is included in Java SE. The installation of JavaFX is included in the Java SDK, so we only need to download and install the latest version of Java SE.
2. Create a JavaFX project:
   With the help of Java IDE (such as Eclipse, IntelliJ IDEA, etc.), we can easily create a JavaFX project. Choose to create a new JavaFX project and give it a name.
3. Add the JavaFX library to the project:
   In the JavaFX project, we need to add the JavaFX library to the project's classpath. In the project's configuration menu, find the build path or dependencies and add the JavaFX library.
4. Create a responsive UI interface:
   JavaFX provides a rich set of UI components and layout managers that can help us build a responsive UI interface. Here is a simple JavaFX application example that demonstrates how to create a UI interface with a responsive layout:

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class HelloWorld extends Application {
    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Hello World");

        // 创建Label组件
        Label label = new Label("Hello World!");

        // 创建VBox布局管理器
        VBox vbox = new VBox();
        vbox.setPadding(new Insets(10));
        vbox.getChildren().add(label);

        // 创建Scene对象
        Scene scene = new Scene(vbox, 200, 100);

        // 将Scene设置到Stage上
        primaryStage.setScene(scene);

        // 显示Stage
        primaryStage.show();
    }
}

5. Run the JavaFX application:
   Run in the Java IDE JavaFX applications are very simple. We only need to click the run button to view and interact with the UI interface in the application.

Conclusion:
JavaFX provides a simple and powerful way to build responsive UI interfaces. In Java 9, JavaFX has become part of Java SE, making it very convenient to use and integrate JavaFX. This article introduces how to use JavaFX to build a responsive UI interface in Java 9, and demonstrates the basic UI interface building process through a simple code example. I hope readers can understand and master the use of JavaFX through this article, thereby creating a better user interface.

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