Скачать JavaFX

JavaFX does not provide a built-in mechanism for downloading files from the internet. However, you can achieve file downloading functionality in JavaFX by utilizing Java's standard `URLConnection` class to establish a connection with the desired file URL and then reading the file's content using `InputStream`. Here's an example code snippet demonstrating file downloading in JavaFX:

java
import javafx.application.Application;
import javafx.concurrent.Task;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import java.io.*;
import java.net.URL;
import java.net.URLConnection;
public class FileDownloader extends Application {
    private static final String FILE_URL = "https://example.com/samplefile.txt";
    private static final String SAVE_PATH = "C:/Downloads/samplefile.txt";
    public static void main(String[] args) {
        launch(args);
    }
    @Override
    public void start(Stage primaryStage) {
        Button downloadButton = new Button("Download");
        downloadButton.setOnAction(event -> {
            Task downloadTask = new Task() {
                @Override
                protected Void call() throws Exception {
                    downloadFile(FILE_URL, SAVE_PATH);
                    return null;
                }
            };
            Thread downloadThread = new Thread(downloadTask);
            downloadThread.start();
        });
        VBox root = new VBox(downloadButton);
        Scene scene = new Scene(root, 300, 200);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
    private void downloadFile(String fileUrl, String savePath) {
        try {
            URL url = new URL(fileUrl);
            URLConnection connection = url.openConnection();
            try (InputStream inputStream = connection.getInputStream();
                 BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
                 FileOutputStream fileOutputStream = new FileOutputStream(savePath);
                 BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(fileOutputStream)) {
                byte[] buffer = new byte[1024];
                int bytesRead;
                while ((bytesRead = bufferedInputStream.read(buffer, 0, buffer.length)) != -1) {
                    bufferedOutputStream.write(buffer, 0, bytesRead);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

In the above code, a JavaFX application is created with a single button labeled "Download". Clicking on this button starts a new thread to download the file specified by `FILE_URL` and save it to the given `SAVE_PATH`. The file downloading logic is implemented in the `downloadFile` method, where it establishes a connection with the file URL, reads the file content using `InputStream`, and saves it to the specified location.

Please note that this is just a basic example, and you might need to handle exceptions, progress reporting, and other aspects depending on your specific requirements.