URL object and sockets

Question

I wrote an applet. It connects to a web server and reads in info. Then i got a problem. I used URL class to open a connection (url.openConnection().getInputStream()) to the web resource (http://web site:xxx/data?params). URL internally opens a socket connection to the resource. Sockets are a protected resource in applets and the applet crashed sighting the security manager. The only way to that i know to make it work, is to sign the applet.
Is there any other way to open a stream to this web resource with out opening sockets or any other restricted resources?

Answer 1

I wrote an applet. It connects to a web server and
reads in info. Then i got a problem. I used URL class
to open a connection
(url.openConnection().getInputStream()) to the web
resource (http://web site:xxx/data?params). URL
internally opens a socket connection to the resource.
Sockets are a protected resource in applets and the
applet crashed sighting the security manager. The only
way to that i know to make it work, is to sign the
applet.
Is there any other way to open a stream to this web
resource with out opening sockets or any other
restricted resources?Absolutely, you can use the URL object instead of a socket. A URL object allows you to read anything that a Web server can serve as along as you use the http protocol. Here is an example:
URL theURL = new URL("http://www.there.com/index.html") ;
URLConnection conn = thURL.openConnection() ;
conn.connect() ;
DataInputStream dis = new DataInputStream(conn.getInputStream()) ;
FileOutputStream fos = new FileOutputStream(someOutputFile) ;
int data = dis.read() ;
while (data != -1)
fos.write(data) ;
data = dis.read() ;
dis.close() ;
fos.close() ;The above code needs to be enclosed in a try catch block but that is about all it takes.