Java Security

Hello, I have been trying to solve this problem for a long time now. I have a class that uses HttpsURLConnection to retrieve data via SSL URL. I have looked at the previous posts and have tried everything. Someone before mentioned to upgrade the JDK. I did that also, I now have JDK 1.4.2_04. I looked at the documentation from "http://java.sun.com/developer/technicalArticles/Security/secureinternet2/". I tried the example and it worked because the URL used was https://www.sun.com. When I use it with my remote server it does not work. I tested the URL on my browser and it works so I know the remote server is enabled with SSL. I don't know what else to do. Can someone please shine some light into this subject for me. Below is somewhat my code:

import java.io.*;
import java.net.*;
import javax.net.ssl.*;

public class ...{

public static void main (String[] args){
URL url;
StringBuffer buffer;
String line;
int responseCode=0;
HttpsURLConnection connection = null;
InputStream input;
BufferedReader dataInput;
String nurl = ".................."; //My URL
try {
url = new URL(nurl);
connection = (HttpsURLConnection) url.openConnection();
responseCode = connection.getResponseCode();
}
catch (Exception e){System.err.println(e);}

try {
buffer = new StringBuffer();
input = connection.getInputStream();
dataInput =
new BufferedReader(new InputStreamReader(input));
while ((line = dataInput.readLine()) != null) {
buffer.append(line);
buffer.append('\n');
}
complete = (String) buffer.toString().trim();
} catch (Exception e){System.err.println(e);}
System.out.println(complete);
}

}

ERROR:
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: No trusted certificate found
java.io.IOException