public static void main(String[] args) {
File f = new File("c://test.jpg");
if (f.exists()) {
System.out.println(getFormatInFile(f));
}
}
private static String getFormatName(Object o) {
try {
ImageInputStream iis = ImageIO.createImageInputStream(o);
Iterator<ImageReader> iter = ImageIO.getImageReaders(iis);
if (!iter.hasNext()) {
return null;
}
ImageReader reader = iter.next();
iis.close();
return reader.getFormatName();
} catch (IOException e) {
}
return null;
}
File f = new File("c://test.jpg");
if (f.exists()) {
System.out.println(getFormatInFile(f));
}
}
private static String getFormatName(Object o) {
try {
ImageInputStream iis = ImageIO.createImageInputStream(o);
Iterator<ImageReader> iter = ImageIO.getImageReaders(iis);
if (!iter.hasNext()) {
return null;
}
ImageReader reader = iter.next();
iis.close();
return reader.getFormatName();
} catch (IOException e) {
}
return null;
}