Image Resize: InputStream - BufferedImage

Question

Hi,
I'm in a position where I'm forced to use Java SE 1.3.1_19. We use Oracle 9iAS and aren't in a position to upgrade at present.
I know in JavaSE1.5 I can use ImageIO etc to resize images on the fly because I have written a class to do this. How can I replicated this functionality in 1.3.1_19?
My requirements are to upload via a multipart form (using Org.Apache.Commons.FileUpload) an Image to a BLOB field in an Oracle DB. If any one can suggest a way to do this with v1.3.1_19 I would very much appreciate it.

Answer 1

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.swing.*;
public class ScalingTest {
    private JScrollPane getContent() {
        Image orig = loadImage();
        BufferedImage scaled = getScaledImage(orig, 0.50);
        JPanel panel = new JPanel(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.insets = new Insets(5,5,5,5);
        gbc.weightx = 1.0;
        panel.add(new JLabel(new ImageIcon(orig)), gbc);
        panel.add(new JLabel(new ImageIcon(scaled)), gbc);
        return new JScrollPane(panel);
    private Image loadImage() {
        String path = "images/cougar.jpg";
        InputStream is = getClass().getResourceAsStream(path);
        byte[] imageData = readData(is);
        ImageIcon icon = new ImageIcon(imageData);
        Image image = icon.getImage();
        // ImageIcon does not let you know if the image was not
        // successfully loaded so you must ask it for feedback.
        int status = icon.getImageLoadStatus();
        String result = "";
        switch(status) {
            case MediaTracker.ABORTED:
                result = "ABORTED";
                break;
            case MediaTracker.ERRORED:
                result = "ERRORED";
                break;
            case MediaTracker.COMPLETE:
                result = "COMPLETE";
                break;
            default:
                result = "unexpected loadingStatus: " + status;
        System.out.println("Loading status for \"" + path + "\": " + result);
        return image;
    private byte[] readData(InputStream is) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        try {
            byte[] buffer = new byte[4096];
            int len, count = 0;
            while((len = is.read(buffer)) != -1) {
                baos.write(buffer, 0, len);
                count += len;
            is.close();
            System.out.println("image size = " + count);
        } catch(IOException e) {
            System.out.println("read error: " + e.getMessage());
        return baos.toByteArray();
    private BufferedImage getScaledImage(Image image, double scale) {
        int w = (int)(scale*image.getWidth(null));
        int h = (int)(scale*image.getHeight(null));
        int type = BufferedImage.TYPE_INT_RGB;
        BufferedImage out = new BufferedImage(w, h, type);
        Graphics2D g2 = out.createGraphics();
        AffineTransform at = AffineTransform.getScaleInstance(scale, scale);
        g2.drawImage(image, at, null);
        g2.dispose();
        return out;
    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(new ScalingTest().getContent());
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
}