How do I match an URL string like this:

img src = "http://stackoverflow.com/a/b/c/d/someimage.jpg"

where only the domain name and the file extension (jpg) is fixed while others are variables?

The following code does not seem working:

Pattern p = Pattern.compile("<img src=\"http://stachoverflow.com/.*jpg");
    // Create a matcher with an input string
    Matcher m = p.matcher(url);
    while (m.find()) {
     String s = m.toString();
    }