To make the updated data reflect programmatically use Partial Trigger. 

        Connection conn=null;        Class.forName ("oracle.jdbc.driver.OracleDriver");
        try{
        conn = DriverManager.getConnection
                ("jdbc:oracle:thin:@localhost:1521:xe", "SYSTEM", "singh");
    }catch(Exception e){
        e.printStackTrace();
        }    
        String sql="UPDATE A SET COUNTRY='Pakistan' WHERE ID=1";
           Statement stm  =conn.prepareStatement(sql);
       int i= stm.executeUpdate(sql);
        DCBindingContainer dcbc=(DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
        DCIteratorBinding dcit=dcbc.findIteratorBinding("ViewObj1Iterator");
        dcit.executeQuery();
        AdfFacesContext.getCurrentInstance().addPartialTarget(getTable());