Image overlay 2 does not work properly

Question

I am trying to combine two images into a PNG / TIFF file from a JPEG image. I am using the following code

try { image = ImageIO.read(new File("C:\\Users\\user\\Desktop\\test\\a.jpg")); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } BufferedImage overlay = null; try { overlay = ImageIO.read(new File("C:\\Users\\user\\Desktop\\test\\b.png")); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } // create the new image, canvas size is the max. of both image sizes int w = Math.max(image.getWidth(), overlay.getWidth()); int h = Math.max(image.getHeight(), overlay.getHeight()); BufferedImage combined = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB); // paint both images, preserving the alpha channels Graphics2D g = combined.createGraphics(); /**Set Antialias Rendering**/ g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); /** * Draw background image at location (0,0) * You can change the (x,y) value as required */ g.drawImage(image, 0, 0, null); /** * Draw foreground image at location (0,0) * Change (x,y) value as required. */ g.drawImage(overlay, 0, 0, null); g.dispose(); // Save as new image try { ImageIO.write(combined, "JPG", new File("C:\\Users\\user\\Desktop\\test\\c.jpg")); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } 

But then the final image that is being formed does not match what I want. For clarity, refer to the attached images.

Answer 1

 import java.awt.*; import java.awt.image.BufferedImage; import java.net.URL; import javax.imageio.ImageIO; import javax.swing.*; class CombineImages { public static void main(String[] args) throws Exception { URL urlImage1 = new URL("http://i.stack.imgur.com/T5uTa.png"); // Load the FG image (must have transparent parts) final Image fgImage = ImageIO.read(urlImage1); int w = fgImage.getWidth(null); int h = fgImage.getHeight(null); // Create a non-trasparent BG image final BufferedImage bgImage = new BufferedImage(w,h,BufferedImage.TYPE_INT_RGB); // Create the final image final BufferedImage finalImage = new BufferedImage(w,h,BufferedImage.TYPE_INT_RGB); Graphics2D g = finalImage.createGraphics(); g.drawImage(bgImage, 0, 0, null); g.drawImage(fgImage, 0, 0, null); g.dispose(); Runnable r = new Runnable() { @Override public void run() { JPanel gui = new JPanel(new GridLayout(1,0,5,5)); gui.add(new JLabel(new ImageIcon(bgImage))); gui.add(new JLabel(new ImageIcon(fgImage))); gui.add(new JLabel(new ImageIcon(finalImage))); JOptionPane.showMessageDialog(null, gui); } }; // Swing GUIs should be created and updated on the EDT // http://docs.oracle.com/javase/tutorial/uiswing/concurrency/initial.html SwingUtilities.invokeLater(r); } }