public class Connection {

ArrayList<String> StringArray = new ArrayList<String>();
private String fileExtension = "jpg";
private String html = "http://mcs.une.edu.au/~salmutai/cameras";
private int count = 0;


public void UrlExtract() throws Exception {

    Document doc = Jsoup.connect(html).get();
    Elements castURL = doc.select("a");
    for (Element el : castURL) {
        String src = el.absUrl("href");
        String extension = src.substring(src.lastIndexOf(".") + 1,
                src.length());
        if (extension.equalsIgnoreCase(fileExtension)) {
            StringArray.add(src);
            count++;

        }
    }

}

public int getCount() throws Exception {
    return count;
}

public String ImgArray(int i) throws Exception {

    String[] StrArray = new String[count];
    StrArray = (String[]) StringArray.toArray(StrArray);
    return StrArray[i];
}

String text = "Found " + StringArray.size() + " images at the url: " + html;
Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();

try {
Connection co = new Connection();
co.UrlExtract();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}