Get size of Image

[Former Member]

Hi All

I have uploaded a photo to a file server.

Now while displaying the image in the UI I need to check the size of the image.

How can i get the size of the image

Please help

Regard

Sonal Mangla

[sid_sunny]

Hi Sonal,

If you are reading the file in bytes the try this:

FileInputStream is = new FileInputStream(file);

long length = file.length();

This will give you the file size in bytes.

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Regards

Sid

[Former Member]

Oops!!!

I want the height and width of the image

Sorry for the confusion.

Regards

Sonal Mangla

[Sigiswald]

Hi Sonal,

As Manish already pointed out, you can use something like this:

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.File;
import javax.imageio.ImageIO;

import org.apache.commons.io.FileUtils;

public class PrintImageDimension {
  public static void main(String[] args) throws Exception {
    BufferedImage img = ImageIO.read(new File(args[0]));
    System.out.println(img.getWidth() + "x" + img.getHeight());

    byte[] file = FileUtils.readFileToByteArray(new File(args[0]));
    img = ImageIO.read(new ByteArrayInputStream(file));
    System.out.println(img.getWidth() + "x" + img.getHeight());
  }
}

Where you probably just need the last two lines in case you already loaded the image in memory as a byte[].

Kind regards,

Sigiswald

[Former Member]

hai,

InputStream stream = resource.read(false);

int size = stream.available();

this will gives size in bytes.

regards,

Naga

[former_member194623]

Hi Sonal,

You can make use of ImageIO class for getting instance of BufferedImage class from InputStream.

Once you get instance of Image, use method getScaledInstance() to resize image.

Regards,

Manish Joshi

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