How to get the format(ex:jpen,png,gif) of image file (BufferedImage) in java

Question

i want to get the buffered image format or type of image using java,

 InputStream stream = request.getResponseStream();   
 BufferedImage image=  ImageIO.read(stream);
 LOGGER.info(image);

Injector

You want to be able to check the format? (e.g. jpeg png bmp) – Frolic

Answer 1

Refer the javax.imageio.ImageIO.read() code

This code originally implemented in groovy but translated into java so It may have a syntax error.

public String read(InputStream input) throws IOException {
    ImageInputStream stream = ImageIO.createImageInputStream(input);

    Iterator iter = ImageIO.getImageReaders(stream);
    if (!iter.hasNext()) {
        return null;
    }
    ImageReader reader = (ImageReader) iter.next();
    ImageReadParam param = reader.getDefaultReadParam();
    reader.setInput(stream, true, true);
    BufferedImage bi;
    try {
        bi = reader.read(0, param);
        return reader.getFormatName();
    } finally {
        reader.dispose();
        stream.close();
    }
}

Glennaglennie

Answer 2

This code might help you to get the extension of image

public static String getFormate(String ImageName) {

    return (ImageName.substring(ImageName.indexOf('.'),ImageName.length()));
}

In the above code first it searches dot(.) and with help of substring() it will return the extension

Linear

You've got many downvotes because no explaination how to get ImageName from InputStream was provided. Practically there is no solution – Hydrology