this is the code what I am using to insert the data. Is this the best way?
       try 
      {
           st =  conect.createStatement();
           sql_v = "insert into VENDEDORES(ID,name,firstlast_name,secondlast_name,phone,celphone) \n"
                  + " values("+ID+",'name','fln','sln','ph','clp')";
          st.executeUpdate(sql_v);
      } 
      catch (Exception ex) {
            JOptionPane.showMessageDialog(null,"","ERROR",JOptionPane.ERROR_MESSAGE);
      }