How to save image?

Question

Hi all,
I have drawn an Image using Graphics, and then I have drawn some rectangles on it.
How can I save that image with drawn rectangles?
any idea or link which should I refer?

Answer 1

Example 1:
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.geom.Ellipse2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class WriteImageType {
  static public void main(String args[]) throws Exception {
    try {
      int width = 200, height = 200;
      // TYPE_INT_ARGB specifies the image format: 8-bit RGBA packed
      // into integer pixels
      BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
      Graphics2D ig2 = bi.createGraphics();
      Font font = new Font("TimesRoman", Font.BOLD, 20);
      ig2.setFont(font);
      String message = "www.java2s.com!";
      FontMetrics fontMetrics = ig2.getFontMetrics();
      int stringWidth = fontMetrics.stringWidth(message);
      int stringHeight = fontMetrics.getAscent();
      ig2.setPaint(Color.black);
      ig2.drawString(message, (width - stringWidth) / 2, height / 2 + stringHeight / 4);
      ImageIO.write(bi, "PNG", new File("c:\\yourImageName.PNG"));
      ImageIO.write(bi, "JPEG", new File("c:\\yourImageName.JPG"));
      ImageIO.write(bi, "gif", new File("c:\\yourImageName.GIF"));
      ImageIO.write(bi, "BMP", new File("c:\\yourImageName.BMP"));
    } catch (IOException ie) {
      ie.printStackTrace();
Example 2:
// 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;
    }