Java consuming SharePoint WCF service using object model

[Praveen Kumar Jayaram]

Hello,

I'm trying to consume a SharePoint web service deployed on IIS remotely and facing some authorization issues.
I have set the NTLM credentials and able to access SharePoint built-in web services like Lists, Search, Web, etc. But the problem is in accessing the custom WCF service using object model classes, as it throws FileNotFoundException. SharePoint reports FileNotFoundException even if the users doesn't have necessary permission.
The same custom WCF service can be consumed successfully locally without any issues.

Though this is not place to ask help for SharePoint related queries. Someone would've faced similar issues while integrating Java and SharePoint.
Please find the code below to configure the NTLM credentials:

public class IService1PortClient {
    private IService1 _port;

    public IService1PortClient() throws Exception {
        Service1 service = new Service1_Impl();
        _port = service.getBasicHttpBinding_IService1();
    }

    private static class SharePointAuthenticator extends Authenticator {

            private String user;
            private String pass;

            public SharePointAuthenticator(String user, String pass) {
                this.user = user;
                this.pass = pass;
            }

            public PasswordAuthentication getPasswordAuthentication() {
                return (new PasswordAuthentication(user, pass.toCharArray()));
            }
    }
    
    public static void main(String[] args) {
        Authenticator.setDefault(new SharePointAuthenticator("user1", "pass1"));
        try {
            IService1PortClient client = new IService1PortClient();;
            String s = client.getAString("Praveen"); //plain method
            System.out.println(s);
            s = client.getUniqueID("http://ip_address/Shared%20Documents/Praveen/Test123.txt"); //method using SP object model
            System.out.println(s);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

   //few other proxy methods
}

Kindly throw some light if any had faced similar issues. Any help would be appreciated.

[Praveen Kumar Jayaram]

Any help?