Question

I have a question in Java how can I check if an image http path is valid or existing?

For example:
This image is existing.
http://g0.gstatic.com/ig/images/promos/homepage_home.png

But this one is not.
http://sampledomain.com/images/fake.png

I would like to make a logic such that:

If(image is existing)
 - do this
Else
 - do others

Thanks

UPDATE:
Tried it with this code that I got while googling:

import java.awt.Image;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;
public class TestImage {
      public static void main(String[] arg){
          Image image = null;
          try {
              URL url = new URL("http://g0.gstatic.com/ig/images/promos/homepage_home.png");
              image = ImageIO.read(url);
          } catch (IOException e) {
              System.out.println("Error");
          }
      }
}

But I always get an error…I am not sure if this is possible.. Any other thoughts?

Answer 1

Make an Http Head request. If it’s an existing path you’ll get a response back, otherwise you’ll get an error.

This does not check that it is a valid image though, just that the path exists. If you want to check whether the image is valid, I think you have got no choice other than to download it.