import java.io.IOException;
import java.io.InputStream;
import java.text.ParseException;
import java.util.Collection;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
class Main{
public static String getUrlFromImgTag(String imgTag)
{
String url = null;
Pattern p = Pattern.compile("src='[^']*'", Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(imgTag);
if (m.find())
{
url = imgTag.substring(m.start() + 5, m.end() - 1);
}
return url;
}
}