public static void main(String[] args) {
        String s = "<img src=\"a.jpg\" width=\"200\">,Java" +
                "<IMG sRc=\"dss.jpg\" style=\"width:200;height:100;\">";

        Pattern p = Pattern.compile("<img src=\"([\\w\\.]*)\"([^>]*)>",
                           Pattern.CASE_INSENSITIVE|Pattern.MULTILINE|Pattern.DOTALL);
        Matcher m = p.matcher(s);
        while (m.find())
            System.out.println("source=" + m.group(1) + "\tstart=" + m.start() + " \tend=" + m.end());
    }