Requested protocol does not exist.

Question

Hello,
I've compiled one the the connection demo's I've found (included below)
I'm running it through kvm instead of the phone emulator.
When running I get a:
javax.microedition.io.ConnectionNotFoundException: The requested protocol does not exist http://java.sun.com
I have tried connections with different protocols and get the same error.
Are no protocols implemented with the kvm that comes precompiled? If so, how do I get them to work?
Regards
Ken
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import java.io.*;
public class hello
public static void main(String args[])
          HttpConnection hc = null;
          InputStream is = null;
          try
               System.out.println("getting connection");
               hc = (HttpConnection)Connector.open("http://java.sun.com");
               System.out.println("opening input stream");
               is = hc.openInputStream();
               int ch;
               Check the Content-Length first
               long len = hc.getLength();
               if(len!=-1)
                    for(int i = 0;i<len;i++)
                         if((ch = is.read())!= -1)
                              System.out.print((char) ch);
               else
                    if the content-length is not available
                    while ((ch = is.read()) != -1)
                         System.out.print((char) ch);
               is.close();
               hc.close();
          catch(Throwable e)
               System.out.println("***PROBLEM***" + e);

Answer 1

CLDC by default does not support HTTP. That is a requirement of MIDP. However, there may be different CLDC runtimes available from where you got that one which may expose HTTP (but not the HttpConneciton class). When you're looking for the smallest example runtime, you just ship what's required. In the case of CLDC where various vendors are competing on size, you don't add anything optional. However, you usually have another drop available with some 'useful' features. One of them being http.