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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software. It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ... Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).

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package JSci.awt;

import java.awt.*;

/**
* The ImageCanvas class allows an image to be directly added to a container.
* @author Daniel Lemire
*/
public class ImageCanvas extends Canvas {
        protected Image image;

        /**
        * Constructs an image canvas.
        */
        public ImageCanvas(Image img) {
                image = img;
                waitForImage();
        }
        /**
        * Paints the canvas.
        */
        public void paint(Graphics g) {
                g.drawImage(image, 0, 0, this);
        }
        private void waitForImage() {
                MediaTracker tracker = new MediaTracker(this);
                try {
                        tracker.addImage(image, 0);
                        tracker.waitForAll();
                        tracker.waitForID(0);
                        if (tracker.checkID(0))
                                repaint();
                        else
                                System.err.println("Could not load the image.");
                } catch(InterruptedException e) {}
        }
}