Reading color pixels from a jpeg

Please help me
I would like to write a java program that imports a jpeg file and reads colors off the pixels from it (given the x, y)
i know java, however, i am still a novice. can you stir me unto a direction, wher i can do this? awt? swing? fileio?
if you have an idea of an algorithm ^_^ that would be even better!
thank you!

Image myJPG;
BufferedImage bi = new BufferedImage(myJPG.getWidth(null),myJPG.getHeight(null),BufferedImage.TYPE_INT_RGB);
Graphics g = bi.getGraphics();
g.drawImage(myJPG,0,0,null);
int rgb = bi.getRGB(pixelX,pixelY);
//if you want, now you can do
Color color = new Color(rgb);

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Reading color pixels from a jpeg

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