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The Java Developers Almanac 1.4Order this book from Amazon. |
e695. Saving a Generated Graphic to a PNG or JPEG FileThis example demonstrates how to create a generated image and save it as a PNG or JPEG file.// Create an image to save RenderedImage rendImage = myCreateImage(); // Write generated image to a file try { // Save as PNG File file = new File("newimage.png"); ImageIO.write(rendImage, "png", file); // Save as JPEG file = new File("newimage.jpg"); ImageIO.write(rendImage, "jpg", file); } catch (IOException e) { } // Returns a generated image. public RenderedImage myCreateImage() { int width = 100; int height = 100; // Create a buffered image in which to draw BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); // Create a graphics contents on the buffered image Graphics2D g2d = bufferedImage.createGraphics(); // Draw graphics g2d.setColor(Color.white); g2d.fillRect(0, 0, width, height); g2d.setColor(Color.black); g2d.fillOval(0, 0, width, height); // Graphics context no longer needed so dispose it g2d.dispose(); return bufferedImage; }
e696. Listing the Image Formats That Can Be Read and Written e697. Determining If an Image Format Can Be Read or Written e698. Determining the Format of an Image in a File e699. Compressing a JPEG File © 2002 Addison-Wesley. |