Example of using createCompatibleImage()

Example of using createCompatibleImage() method to create Compatible BufferedImage and Translucent Compatible BufferedImage.

Example of using createCompatibleImage()

package javaswing;

import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.Transparency;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

/**
 *
 * @web http://java-buddy.blogspot.com/
 */
public class JavaTestSwing {
    
    static JFrameWin jFrameWindow;
    
    public static class MyComponent extends JComponent{

        @Override
        protected void paintComponent(Graphics g) {
            try {
                //prepare a original Image source
                Image image = ImageIO.read(this.getClass().getResource("duke.png"));

                //Get current GraphicsConfiguration
                GraphicsConfiguration graphicsConfiguration 
                        = GraphicsEnvironment
                        .getLocalGraphicsEnvironment()
                        .getDefaultScreenDevice()
                        .getDefaultConfiguration();
                
                //Create a Compatible BufferedImage
                BufferedImage bufferedImage 
                        = graphicsConfiguration.createCompatibleImage(
                        image.getWidth(null), 
                        image.getHeight(null));
                //Copy from original Image to new Compatible BufferedImage
                Graphics tempGraphics = bufferedImage.getGraphics();
                tempGraphics.drawImage(image, 0, 0, null);
                tempGraphics.dispose();
                
                //Create a Compatible BufferedImage for translucent image
                BufferedImage bufferedImage_translucent
                        = graphicsConfiguration.createCompatibleImage(
                        image.getWidth(null), 
                        image.getHeight(null),
                        Transparency.TRANSLUCENT);
                //Copy from original Image to new Compatible BufferedImage
                Graphics tempGraphics_translucent 
                        = bufferedImage_translucent.getGraphics();
                tempGraphics_translucent.drawImage(image, 0, 0, null);
                tempGraphics_translucent.dispose();
                
                g.drawImage(bufferedImage, 0, 0, null);
                g.drawImage(bufferedImage_translucent, 0, bufferedImage.getHeight(), null);
                
            } catch (IOException ex) {
                Logger.getLogger(JavaTestSwing.class.getName()).log(Level.SEVERE, null, ex);
            }

        }
    }
    
    public static class JFrameWin extends JFrame{
        public JFrameWin(){
            this.setTitle("java-buddy.blogspot.com");
            this.setSize(300, 300);
            this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
            MyComponent myComponent = new MyComponent();
            this.add(myComponent);
        }
    }

    public static void main(String[] args){
        Runnable doSwingLater = new Runnable(){
            
            @Override
            public void run() {
                jFrameWindow = new JFrameWin();
                jFrameWindow.setVisible(true);
            }
        };
        
        SwingUtilities.invokeLater(doSwingLater);
        
    }

}