Vaadin table column order is getting changed automatically - vaadin8

Question

I have created a table which has few columns in it. i have given header names for each column. After table initialization i see that column are not appearing in the order in which they are added in table. Column names are reordered alphabetically. Please find below the code of the same.
private Table createGridTable() {
Table grid = new FilterAndPagedTable(this.generateTableOptions());
grid.addContainerProperty("previousPeriod", String.class, null);
grid.addContainerProperty("prevchannelA", Float.class, null);
grid.addContainerProperty("prevchannelB", Float.class, null);
grid.addContainerProperty("prevchannelC", Float.class, null);
grid.addContainerProperty("prevchannelD", Float.class, null);
grid.addContainerProperty("prevAllChannelCons", Float.class, null);
grid.addContainerProperty("presentPeriod", String.class, null);
grid.addContainerProperty("presentchannelA", Float.class, null);
grid.addContainerProperty("presentchannelB", Float.class, null);
grid.addContainerProperty("presentchannelC", Float.class, null);
grid.addContainerProperty("presentchannelD", Float.class, null);
grid.addContainerProperty("presentAllChannelCons", Float.class, null);
grid.addContainerProperty("diffOfPrevNPresent", Float.class, null);
grid.addContainerProperty("percentageChangeOfPrevNPresent", String.class, null);
grid.setColumnHeader("previousPeriod", PrevYearConstants.PREVIOUS_PERIOD);
grid.setColumnHeader("prevchannelA", IemsConstants.A_DC_Power);
grid.setColumnHeader("prevchannelB", IemsConstants.B_Essential_Cooling);
grid.setColumnHeader("prevchannelC", IemsConstants.C_UPS_Power);
grid.setColumnHeader("prevchannelD", IemsConstants.D_Non_Essential_Cooling);
grid.setColumnHeader("prevAllChannelCons", "A + B + C + D");
grid.setColumnHeader("presentPeriod", PrevYearConstants.PRESENT_PERIOD);
grid.setColumnHeader("presentchannelA", IemsConstants.A_DC_Power);
grid.setColumnHeader("presentchannelB", IemsConstants.B_Essential_Cooling);
grid.setColumnHeader("presentchannelC", IemsConstants.C_UPS_Power);
grid.setColumnHeader("presentchannelD", IemsConstants.D_Non_Essential_Cooling);
grid.setColumnHeader("presentAllChannelCons", "A + B + C + D");
grid.setColumnHeader("diffOfPrevNPresent", PrevYearConstants.DIFFERENCE);
grid.setColumnHeader("percentageChangeOfPrevNPresent", PrevYearConstants.PERCENTAGE);
System.out.println(grid.isSortAscending());
System.out.println(grid.isSortEnabled());
grid.setVisibleColumns(new Object[] { "previousPeriod", "prevchannelA", "prevchannelB", "prevchannelC",
"prevchannelD", "prevAllChannelCons", "presentPeriod", "presentchannelA", "presentchannelB",
"presentchannelC", "presentchannelD", "presentAllChannelCons", "diffOfPrevNPresent",
"percentageChangeOfPrevNPresent" });
grid.setSizeFull();
return grid;
}
public FilterAndPagedTableOptions generateTableOptions() {
FilterAndPagedTableOptions fptOptions = new FilterAndPagedTableOptions();
fptOptions.setCollapseAllowed(false);
fptOptions.setColumnReorderingAllowed(false);
fptOptions.setSortAllowed(false);
fptOptions.setShowInbuiltFilterBar(false);
return fptOptions;
}
i am loading data in table as below
List<PrevYearConsumption> tableContainer = viewElements.get(PrevYearConstants.PREV_YEAR_TABLE_CONFIG)
.getTableContainer();
this.grid.setPageLength(tableContainer.size());
BeanItemContainer container = new BeanItemContainer<PrevYearConsumption>(PrevYearConsumption.class);
container.addAll(tableContainer);
this.grid.setContainerDataSource(container);
The order of columns in table is not coming the way i have added in table's header. It is coming in random manner.
I am using vaadin 8.
Kindly help here .
Let me know in case any further info is required.

Answer 1

Is this pure Vaadin 8 or is it Vaadin 7 or is it Vaadin 8 with compatibility packages?
i would try to invoke
grid.setVisibleColumns(new Object[] { "previousPeriod", "prevchannelA", "prevchannelB", "prevchannelC",
"prevchannelD", "prevAllChannelCons", "presentPeriod", "presentchannelA", "presentchannelB",
"presentchannelC", "presentchannelD", "presentAllChannelCons", "diffOfPrevNPresent",
"percentageChangeOfPrevNPresent" });
after loading the data in the table.