JavaFX example to capture screen/GUI nodes

JavaFX example to capture screen/GUI nodes:

package javafxcapturescreen;

import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.embed.swing.SwingFXUtils;
import javafx.event.ActionEvent;
import javafx.scene.Scene;
import javafx.scene.SnapshotParameters;
import javafx.scene.control.Button;
import javafx.scene.image.WritableImage;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javax.imageio.ImageIO;

/**
 *
 * @web http://java-buddy.blogspot.com/
 */
public class JavaFXCaptureScreen extends Application {
    
    @Override
    public void start(Stage primaryStage) {
        StackPane root = new StackPane();
        Scene scene = new Scene(root, 300, 250);
        
        Button btnCaptureScene = new Button();
        btnCaptureScene.setText("Capture scene");
        btnCaptureScene.setOnAction((ActionEvent event) -> {
            
            WritableImage writableImage = scene.snapshot(null);
            File file = new File("capturedScene.png");
            try {
                ImageIO.write(SwingFXUtils.fromFXImage(writableImage, null), "png", file);
                System.out.println("Captured: " + file.getAbsolutePath());
            } catch (IOException ex) {
                Logger.getLogger(JavaFXCaptureScreen.class.getName()).log(Level.SEVERE, null, ex);
            }
        });
        
        Button btnCaptureRoot = new Button();
        btnCaptureRoot.setText("Capture root");
        btnCaptureRoot.setOnAction((ActionEvent event) -> {
            WritableImage writableImage = root.snapshot(new SnapshotParameters(), null);

            File file = new File("capturedRoot.png");
            try {
                ImageIO.write(SwingFXUtils.fromFXImage(writableImage, null), "png", file);
                System.out.println("Captured: " + file.getAbsolutePath());
            } catch (IOException ex) {
                Logger.getLogger(JavaFXCaptureScreen.class.getName()).log(Level.SEVERE, null, ex);
            }
        });
        
        VBox vBox = new VBox();
        vBox.getChildren().addAll(btnCaptureScene, btnCaptureRoot);
        root.getChildren().add(vBox);
        
        primaryStage.setTitle("java-buddy.blogspot.com");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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

capturedScene.png

capturedRoot.png

Capture screen using java.awt.Robot

Java example to capture screen using java.awt.Robot:

package javarobotcapturescreen;

import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;

/**
 *
 * @web http://java-buddy.blogspot.com/
 */
public class JavaRobotCaptureScreen {

    public static void main(String[] args) {
        try {
            Robot robot = new Robot();
            
            Toolkit myToolkit = Toolkit.getDefaultToolkit();
            Dimension screenSize = myToolkit.getScreenSize();
            
            Rectangle screen = new Rectangle(screenSize);
            
            BufferedImage screenFullImage = robot.createScreenCapture(screen);
            ImageIO.write(screenFullImage, "jpg", new File("screen.jpg"));
            
        } catch (AWTException | IOException ex) {
            Logger.getLogger(JavaRobotCaptureScreen.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    
}

captured screen:

Get screen size and resolution, with java.awt.Toolkit

Java example to get screen size and resolution, with java.awt.Toolkit:

package javagetscreensize;

import java.awt.Dimension;
import java.awt.Toolkit;

/**
 *
 * @web http://java-buddy.blogspot.com/
 */
public class JavaGetScreenSize {

    public static void main(String[] args) {
        Toolkit myToolkit = Toolkit.getDefaultToolkit();
        Dimension screenSize = myToolkit.getScreenSize();
        int screenResolution = myToolkit.getScreenResolution();
        System.out.println("Screen size = " + screenSize.width + " x " + screenSize.height);
        System.out.println("Screen Resolution: " + screenResolution + " dots-per-inch");
    }
    
}

Java Everywhere: Write Once run Anywhere with DukeScript

Java Everywhere: Write Once run Anywhere with DukeScript

Do you want to write Java apps that run on mobile phones, tablets as well as your desktop computer? In this book you'll learn how to design and develop apps and upload them to Google Play and Apples App Store. The technology we'll use for that is DukeScript, a new framework for single-source cross-platform development in Java.