Problems Creating a Java Class using a webservice with certificate

Question

hi,
i'm developing a java class that call's a webservice that needs a certificate, i'm not used to work with java, last time was 10 years ago, so i'm having some troubles because of the certificate.
I already add the certificate using java control panel > Security > Certificates. When testing i get the following error: IOException (java.io.IOException: subject key, Unknown key spec)
I think I need to define the certificate in my class, but i'm having a lots of trouble with the samples that i found over the internet, nothing works and i'm running out of time.
This is my Class
create or replace and compile java source named "FishInfoAt" as
import java.net.*;
import java.io.*;
import java.security.*;
public class FishInfoAt
     public FishInfoAt()
     public static String send(String urlfishinfoat, String mensagem, String mensagem1, String mensagem2, String mensagem3)
          // Init
          String response = "";
          String msgtotal = mensagem+mensagem1+mensagem2+mensagem3;
          String a = "";
          HttpURLConnection conn = null;
          try{
               URL url = new URL(urlfishinfoat);
               conn = (HttpURLConnection) url.openConnection();
               conn.setRequestMethod("POST");
               conn.setRequestProperty("Content-type", "text/xml; charset=utf-8");
               conn.setRequestProperty("SOAPAction", "https://servicos.portaldasfinancas.gov.pt:401/sgdtws/documentosTransporte/");
               conn.setRequestProperty("Content-Length","" + msgtotal.length());
               conn.setDoOutput(true);
               conn.setDoInput(true);
               conn.connect();
               OutputStream out = conn.getOutputStream();
               out.write(msgtotal.getBytes());
               out.flush();
               InputStream in = conn.getInputStream();
               int value;
               while( (value = in.read()) != -1)
                    response+=(char)value;
          catch(Exception e)
response = ("*** ERROR - IOException (" + e.getMessage() + a + ")");
return response;
/

Answer 1

Hi Deepak,
Could you please let us know upto which line your code is going safe. Try printing the value in the structure before you send that to the method GetUGEntity().
I am not too sure that would be a problem. But I have faced a problem like this, wherein I tried to access a structure for which I have not allocated memory and hence got exception because of that.
Since your JNI code seems to be error free, I got doubt on your C part. Sorry.
Dhamo.