Example usage for javax.imageio ImageIO write

List of usage examples for javax.imageio ImageIO write

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Introduction

In this page you can find the example usage for javax.imageio ImageIO write.

Prototype

public static boolean write(RenderedImage im, String formatName, OutputStream output) throws IOException

Source Link

Document

Writes an image using an arbitrary ImageWriter that supports the given format to an OutputStream .

Usage

From source file:Main.java

public static void main(String[] args) throws IOException {
    BufferedImage img = new BufferedImage(20, 20, BufferedImage.TYPE_INT_ARGB);
    Graphics2D g = img.createGraphics();
    g.setColor(Color.white);//www. j  ava  2  s .  co  m
    g.fillRect(0, 0, 20, 20);
    g.setColor(Color.black);
    g.fillRect(5, 5, 10, 10);

    Color[] mapping = new Color[] { Color.black, Color.white, // replace black with white 
            Color.white, Color.green // and white with green
    };

    ImageIO.write(img, "png", new File("original.png"));
    swapColors(img, mapping);
    ImageIO.write(img, "png", new File("swapped.png"));
}

From source file:Main.java

static public void main(String args[]) throws Exception {
    int width = 200, height = 200;
    BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);

    Graphics2D ig2 = bi.createGraphics();
    ig2.fillRect(0, 0, width - 1, height - 1);

    BasicStroke stroke = new BasicStroke(10, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
    ig2.setPaint(Color.lightGray);
    ig2.setStroke(stroke);/*from w ww . j av  a  2  s .  c o  m*/
    ig2.draw(new Ellipse2D.Double(0, 0, 100, 100));

    ImageIO.write(bi, "GIF", new File("a.gif"));
}

From source file:Main.java

public static void main(String[] args) throws IOException {

    final int SCALE = 2;

    Image img = new ImageIcon(new URL("http://www.java2s.com/style/download.png")).getImage();

    BufferedImage bi = new BufferedImage(SCALE * img.getWidth(null), SCALE * img.getHeight(null),
            BufferedImage.TYPE_INT_ARGB);

    Graphics2D grph = (Graphics2D) bi.getGraphics();
    grph.scale(SCALE, SCALE);//from ww  w . j  a  v a 2  s. c  o m

    grph.drawImage(img, 0, 0, null);
    grph.dispose();

    ImageIO.write(bi, "png", new File("double_size.png"));
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    int width = 100;
    int height = 100;

    BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

    Graphics2D g2d = bufferedImage.createGraphics();

    g2d.setColor(Color.white);//from  w  w  w.ja v  a2s.c o  m
    g2d.fillRect(0, 0, width, height);
    g2d.setColor(Color.black);
    g2d.fillOval(0, 0, width, height);

    g2d.dispose();
    RenderedImage rendImage = bufferedImage;

    File file = new File("newimage.png");
    ImageIO.write(rendImage, "png", file);

    file = new File("newimage.jpg");
    ImageIO.write(rendImage, "jpg", file);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    BufferedImage inputFile = ImageIO.read(new URL("http://www.java2s.com/style/download.png"));

    for (int x = 0; x < inputFile.getWidth(); x++) {
        for (int y = 0; y < inputFile.getHeight(); y++) {
            int rgba = inputFile.getRGB(x, y);
            Color col = new Color(rgba, true);
            col = new Color(255 - col.getRed(), 255 - col.getGreen(), 255 - col.getBlue());
            inputFile.setRGB(x, y, col.getRGB());
        }/*from  www  .  ja  va  2s  .co  m*/
    }

    File outputFile = new File("invert.png");
    ImageIO.write(inputFile, "png", outputFile);

}

From source file:Main.java

public static void main(String[] args) throws IOException {
    BufferedImage large = ImageIO.read(new File("images/a.jpg"));
    BufferedImage small = ImageIO.read(new File("images/b.jpg"));

    int w = large.getWidth();
    int h = large.getHeight();
    int type = BufferedImage.TYPE_INT_RGB;

    BufferedImage image = new BufferedImage(w, h, type);
    Graphics2D g2 = image.createGraphics();
    g2.drawImage(large, 0, 0, null);/* w ww .j a v  a 2  s  .  c  o  m*/
    g2.drawImage(small, 10, 10, null);
    g2.dispose();
    ImageIO.write(image, "jpg", new File("new.jpg"));

    JOptionPane.showMessageDialog(null, new ImageIcon(image), "", JOptionPane.PLAIN_MESSAGE);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int size = 200;
    BufferedImage image = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);

    Graphics2D g = image.createGraphics();
    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    g.setColor(Color.BLUE);//from   ww w.j  a  v a  2 s  .com
    for (int i = 0; i < size; i += 5) {
        g.drawOval(i, i, size - i, size - i);
    }
    g.dispose();

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ImageIO.write(image, "png", baos);

    String data = DatatypeConverter.printBase64Binary(baos.toByteArray());
    String imageString = "data:image/png;base64," + data;
    String html = "<html><body><img src='" + imageString + "'></body></html>";
    System.out.println(html);
}

From source file:Main.java

public static void main(String[] args) throws IOException {
    URL url = new URL("http://www.java2s.com/style/download.png");
    BufferedImage im = ImageIO.read(url);
    URL url2 = new URL("http://www.java2s.com/style/download.png");
    BufferedImage im2 = ImageIO.read(url2);
    Graphics2D g = im.createGraphics();
    g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.4f));
    g.drawImage(im2, (im.getWidth() - im2.getWidth()) / 2, (im.getHeight() - im2.getHeight()) / 2, null);
    g.dispose();//from w w  w.j a  va  2  s .  c o m

    display(im);
    ImageIO.write(im, "jpeg", new File("output.jpeg"));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int size = 120;
    int pad = 10;
    BufferedImage bi = new BufferedImage(size, size, BufferedImage.TYPE_INT_RGB);
    Graphics g = bi.createGraphics();
    g.setColor(Color.WHITE);//from w  ww.  j  a va 2  s  . c o  m
    g.fillRect(0, 0, size, size);
    g.setColor(Color.YELLOW);
    g.fillOval(pad, pad, size - (2 * pad), size - (2 * pad));
    g.dispose();

    BufferedImage image2 = new BufferedImage(bi.getWidth(), bi.getHeight(), BufferedImage.TYPE_BYTE_GRAY);

    ColorConvertOp op = new ColorConvertOp(bi.getColorModel().getColorSpace(),
            image2.getColorModel().getColorSpace(), null);
    op.filter(bi, image2);
    ImageIO.write(image2, "png", new File("c:/Java_Dev/image2.png"));
}

From source file:SaveIt.java

public static void main(String args[]) throws IOException {
    // Read/*from   ww  w  .j a v  a2 s . c  o m*/
    File inputFile = new File("java2s.jpg");
    BufferedImage input = ImageIO.read(inputFile);
    // Convert
    Kernel kernel = new Kernel(3, 3, SHARP);
    ConvolveOp convolveOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
    int width = input.getWidth();
    int height = input.getHeight();
    BufferedImage output = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    convolveOp.filter(input, output);
    // Save
    File outputFile = new File("java2s.png");
    ImageIO.write(output, "PNG", outputFile);
}