ImageJ Problem

gistfile1.java

File file = new File(path);

if (file.exists()) {
    ImagePlus image = IJ.openImage(file.getAbsolutePath());
    System.out.println(image.getTitle());
    ImagePlus[] split = ChannelSplitter.split(image);

    if (split != null) {
        System.out.println("SPLIT OK");
    } else {
        System.err.println("SPLIT NULL");
    }
}