Getting Height and Width of Image in Java without an ImageObserver

Question

I am trying to get the height and width of images (via a url) in Java without an ImageObserver. My current code is:

public static v         


        

Answer 1

Following should work

   Image image = Toolkit.getDefaultToolkit().getImage(image_url);
   ImageIcon icon = new ImageIcon(image);
   int height = icon.getIconHeight();
   int width = icon.getIconWidth();
   sb.append(line + ","+ height + "," + width + newline);

Answer 2

One can get width and height using following code if there is difficulty in retrieving URL.

try {

File f = new File(yourclassname.class.getResource("data/buildings.jpg").getPath());
BufferedImage image = ImageIO.read(f);
int height = image.getHeight();
int width = image.getWidth();
System.out.println("Height : "+ height);
System.out.println("Width : "+ width);
              } 
catch (IOException io) {
    io.printStackTrace();
  }

Note: data is folder in /src containing images.

Credit goes to Getting height and width of image in Java

Answer 3

You can use ImageIcon to handle the loading of the image for you.

Change

Image img = Toolkit.getDefaultToolkit().getImage(url);
sb.append(line + ","+ img.getHeight(null) + "," + img.getWidth(Null) + newline);

to

ImageIcon img = new ImageIcon(url);
sb.append(line + ","+ img.getIconHeight(null) + "," + img.getIconWidth(Null) + newline);

The main change is to use ImageIcon, and the getIconWidth, getIconHeight methods.