Java Programming

Hi all,

I have a incomprehensible problem. I have a java application wich manipulate images. This application works fine with a desktop environment but when I try to migrate it on production server (without X), a exception is catch...

javax.imageio.IIOException: Can't read input file!
        at javax.imageio.ImageIO.read(ImageIO.java:1279)
        at FaceplateBuilder.fillImageByClients(FaceplateBuilder.java:95)
        at FaceplateBuilder.createPack(FaceplateBuilder.java:68)
        at FaceplateBuilder.run(FaceplateBuilder.java:39)

This is the following code...

File tmp = new File("/tmp/test.jpg");
BufferedImage in = ImageIO.read(tmp);

The file /tmp/test.jpg exist.

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Here are all tested solutions without success :
*I've tried to upgrade the java version (1.5.0_14 to 1.6.0_06). 1.6.0_06 is the desktop environment configuration.
* I read this page: [Using Headless Mode in the Java SE Platform|http://java.sun.com/developer/technicalArticles/J2SE/Desktop/headless/] and I try to launch java with java.awt.headless=true variable.
* I have install the [X11 dev library|http://javatechniques.com/public/java/docs/hosting/headless-java-x11-libraries.html]. (apt-get install libice-dev libsm-dev libx11-dev libxp-dev libxt-dev libxtst-dev)
* I have changed the ImageIO code by following :

Image tmp = loadImageFile("/tmp/test.jpg");
BufferedImage in = toBufferedImage(tmp);

[...]
public static BufferedImage toBufferedImage(Image image) {
		if (image instanceof BufferedImage) {
			return ((BufferedImage) image);
		} else {
			BufferedImage bufferedImage = new BufferedImage(image
					.getWidth(null), image.getHeight(null),
					BufferedImage.TYPE_INT_RGB);
			Graphics g = bufferedImage.createGraphics();
			g.drawImage(image, 0, 0, Color.WHITE, null);
			g.dispose();
			return (bufferedImage);
		}
	}
	
	public static Image loadImageFile(String imgFile) {
		Image img = Toolkit.getDefaultToolkit().getImage(imgFile);
		MediaTracker mediaTracker = new MediaTracker(new Container());
		mediaTracker.addImage(img, 0);
		try {
			mediaTracker.waitForID(0);
		} catch (InterruptedException e) {
			e.printStackTrace();
			System.out.println(e.getMessage());
		}
		return (img);
	}

This code catches a new error...

java.lang.IllegalArgumentException: Width (-1) and height (-1) cannot be <= 0
        at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:999)
        at java.awt.image.BufferedImage.<init>(BufferedImage.java:314)
        at FaceplateBuilder.toBufferedImage(FaceplateBuilder.java:122)
        at FaceplateBuilder.fillImageByClients(FaceplateBuilder.java:95)
        at FaceplateBuilder.createPack(FaceplateBuilder.java:73)
        at FaceplateBuilder.run(FaceplateBuilder.java:44)

I think it's the same problem... The Image can't be loaded and I don't know why ! This problem make me crazy so I tried to post here.

Thanks in advance