Import a valid Server Certificate as a trustStore.?

Question

How do I import a valid server certificate as a trustStore and put
this in jre/lib/security.
I have a Java class that needs to connect to a valid HTTPS Server
having a certificate issued by a CA.
Now,I have a Java client that connects to this server,and sends and
receives data.
I will need to import the server certificate into the jre/lib/security
directory?
I guess we need to do this so that the client accepts the server's
certificate
Has anyone understood my question?
Attached is my java class:
public class HttpsSender
String sURL = "SomeServerAddress";
public static String ec(String sMess)
String response=null;
try {
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
System.setProperty("java.protocol.handler.pkgs","com.sun.net.ssl.internal.www.protocol");
/* Temporarily testing on Tomcat and hence the Context:A_SYMBIAN_SERVLET */
URL url;
String uri = "https://" + sURL
url = new URL(uri);
HttpsURLConnection hpCon= (HttpsURLConnection)url.openConnection();
hpCon.setRequestMethod("POST");
hpCon.setDoOutput(true);
hpCon.setDoInput(true);
/** Transfer Data over https */
DataOutputStream dos = new DataOutputStream(hpCon.getOutputStream());
dos.writeUTF(sMess);
/* Response from the Receiving Servlet.*/
DataInputStream dis = new DataInputStream(hpCon.getInputStream());
try {
response = dis.readUTF();
}finally
dos.close();
dis.close();
}catch(IOException e)
System.out.println("Error in Client " + e);
return response;
} // End of Method Encrypt.

Answer 1

You can import a valid server certificate into a Store with the keytool!
Good link:
http://forum.java.sun.com/thread.jsp?forum=2&thread=4240
You must provide to the Java-VM where it can find the TrustStore:
-> on command line:
java -Djavax.net.ssl.trustStore=XXX/jssesamples/samplecacerts
For Testing the Debug Output can be usefull! Enable with:
java -Djavax.net.debug=handshake,ssl
-> in source code:
System.setProperty("javax.net.ssl.trustStore",STORE_FILE);
System.setProperty("javax.net.ssl.trustStorePassword",STORE_PASS);