Acessar o SAP via RFC

public void conectar(String usuario, String senha) {
		
	    try {
	        // Create a client connection to a dedicated R/3 system
	        client = JCO.createClient("250",  			// SAP client
	  								  usuario,  		// userid
	  								  senha,    		// password
	  								  "PT",				// language
	  								  "192.168.0.117",	// host name
	  								  "00");			// system number

	        // Open the connection
	        client.connect();
	    }
	    catch (Exception ex) {
	    	JOptionPane.showMessageDialog(null, ex,	"Erro", JOptionPane.ERROR_MESSAGE);
	    }
	}