Test if a file is an image file

Question

I am using some file IO and want to know if there is a method to check if a file is an image?

Answer 1

Here's my code based on the answer using tika.

private static final Tika TIKA = new Tika();
public boolean isImageMimeType(File src) {
    try (FileInputStream fis = new FileInputStream(src)) {
        String mime = TIKA.detect(fis, src.getName());
        return mime.contains("/") 
                && mime.split("/")[0].equalsIgnoreCase("image");
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}