applet访问服务器上的静态数据有哪些方法？

Question

int httpStatusCode;
URL url =new URL(fileurl);
URLConnection conn = url.openConnection();
conn.connect();
HttpURLConnection httpconn =(HttpURLConnection)conn;
httpStatusCode =httpconn.getResponseCode();
if(httpStatusCode!=HttpURLConnection.HTTP_OK)
{//HttpURLConnection return an error code
System.out.println("Connect to "+fileurl+" failed,return code:"+httpStatusCode);
return false;
}
int filelen = conn.getContentLength();
InputStream is = conn.getInputStream();