Connecting to LDAP Using Java

Question

I tried connecting to LDAP Server using below Java code, but code throws error:

can't create context error. The LDAP Server host is running seamlessly on Prod Server.

Is there anything that I need to correct here?

The stack trace is as follows:

Caused by: java.net.UnknownHostException: glue.systems.sa.hsbc

Analysis done:

1. When i ping the same hostname from ping command, i get packets successfully.

ping glue.systems.sa.hsbc returns packets successfully

2. I Also converted hostname to ipaddress using socket api and connected. But still the same Exception(Unknown Host Exception)

    public static void main(String[]args)
    {
        Hashtable<String, String> environment = new Hashtable<String, String>();
   
        environment.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
        environment.put(Context.PROVIDER_URL, "ldap://glue.systems.sa.hsbc:3269");
        environment.put(Context.SECURITY_AUTHENTICATION, "SIMPLE");
        environment.put(Context.SECURITY_PRINCIPAL, "CN=HBSA-SVC-SIDEX,OU=Service Accounts,DC=InfoDir,DC=Prod,DC=HSBC");
        environment.put(Context.SECURITY_CREDENTIALS, "LXltp9RrY98FVYkr3S/emg==");
        environment.put(Context.SECURITY_PROTOCOL, "SSL");
   
   
   
        try 
        {
            DirContext context = new InitialDirContext(environment);
            System.out.println("Connected..");
            System.out.println(context.getEnvironment());
            context.close();
        } 
        catch (AuthenticationNotSupportedException exception) 
        {
            System.out.println("The authentication is not supported by the server");
        }
   
        catch (AuthenticationException exception)
        {
            System.out.println("Incorrect password or username");
        }
   
        catch (NamingException exception)
        {
            System.out.println("Error when trying to create the context");
        }
    }